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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
ec16f3b6 | 2 | |
ec16f3b6 LP |
3 | #include <sys/utsname.h> |
4 | ||
1624114d | 5 | #include "af-list.h" |
ec16f3b6 | 6 | #include "analyze-security.h" |
bb43d853 | 7 | #include "analyze-verify.h" |
ec16f3b6 | 8 | #include "bus-error.h" |
807542be | 9 | #include "bus-map-properties.h" |
ec16f3b6 LP |
10 | #include "bus-unit-util.h" |
11 | #include "bus-util.h" | |
04469211 | 12 | #include "copy.h" |
ec16f3b6 LP |
13 | #include "env-util.h" |
14 | #include "format-table.h" | |
84ebe6f0 | 15 | #include "in-addr-prefix-util.h" |
ec16f3b6 LP |
16 | #include "locale-util.h" |
17 | #include "macro.h" | |
bb43d853 | 18 | #include "manager.h" |
f5947a5e YW |
19 | #include "missing_capability.h" |
20 | #include "missing_sched.h" | |
04469211 | 21 | #include "mkdir.h" |
d8b4d14d | 22 | #include "nulstr-util.h" |
ec16f3b6 LP |
23 | #include "parse-util.h" |
24 | #include "path-util.h" | |
25 | #include "pretty-print.h" | |
3a5d89fa WKI |
26 | #if HAVE_SECCOMP |
27 | # include "seccomp-util.h" | |
28 | #endif | |
1624114d | 29 | #include "service.h" |
ec16f3b6 LP |
30 | #include "set.h" |
31 | #include "stdio-util.h" | |
32 | #include "strv.h" | |
33 | #include "terminal-util.h" | |
34 | #include "unit-def.h" | |
35 | #include "unit-name.h" | |
1624114d | 36 | #include "unit-serialize.h" |
ec16f3b6 | 37 | |
1624114d | 38 | typedef struct SecurityInfo { |
ec16f3b6 LP |
39 | char *id; |
40 | char *type; | |
41 | char *load_state; | |
42 | char *fragment_path; | |
43 | bool default_dependencies; | |
44 | ||
45 | uint64_t ambient_capabilities; | |
46 | uint64_t capability_bounding_set; | |
47 | ||
48 | char *user; | |
49 | char **supplementary_groups; | |
50 | bool dynamic_user; | |
51 | ||
52 | bool ip_address_deny_all; | |
53 | bool ip_address_allow_localhost; | |
54 | bool ip_address_allow_other; | |
55 | ||
fab34748 KL |
56 | bool ip_filters_custom_ingress; |
57 | bool ip_filters_custom_egress; | |
58 | ||
ec16f3b6 | 59 | char *keyring_mode; |
ed125c93 LP |
60 | char *protect_proc; |
61 | char *proc_subset; | |
ec16f3b6 LP |
62 | bool lock_personality; |
63 | bool memory_deny_write_execute; | |
64 | bool no_new_privileges; | |
65 | char *notify_access; | |
527bd7f1 | 66 | bool protect_hostname; |
ec16f3b6 LP |
67 | |
68 | bool private_devices; | |
69 | bool private_mounts; | |
70 | bool private_network; | |
71 | bool private_tmp; | |
72 | bool private_users; | |
73 | ||
74 | bool protect_control_groups; | |
75 | bool protect_kernel_modules; | |
76 | bool protect_kernel_tunables; | |
82dce83b | 77 | bool protect_kernel_logs; |
9f37272a | 78 | bool protect_clock; |
ec16f3b6 LP |
79 | |
80 | char *protect_home; | |
81 | char *protect_system; | |
82 | ||
83 | bool remove_ipc; | |
84 | ||
85 | bool restrict_address_family_inet; | |
86 | bool restrict_address_family_unix; | |
87 | bool restrict_address_family_netlink; | |
88 | bool restrict_address_family_packet; | |
89 | bool restrict_address_family_other; | |
90 | ||
1624114d | 91 | unsigned long long restrict_namespaces; |
ec16f3b6 | 92 | bool restrict_realtime; |
9d880b70 | 93 | bool restrict_suid_sgid; |
ec16f3b6 LP |
94 | |
95 | char *root_directory; | |
96 | char *root_image; | |
97 | ||
98 | bool delegate; | |
99 | char *device_policy; | |
100 | bool device_allow_non_empty; | |
101 | ||
1624114d | 102 | Set *system_call_architectures; |
ec16f3b6 | 103 | |
6b000af4 | 104 | bool system_call_filter_allow_list; |
1624114d | 105 | Hashmap *system_call_filter; |
ec16f3b6 | 106 | |
1624114d MG |
107 | mode_t _umask; |
108 | } SecurityInfo; | |
ec16f3b6 LP |
109 | |
110 | struct security_assessor { | |
111 | const char *id; | |
3838d22c | 112 | const char *json_field; |
ec16f3b6 LP |
113 | const char *description_good; |
114 | const char *description_bad; | |
115 | const char *description_na; | |
116 | const char *url; | |
117 | uint64_t weight; | |
118 | uint64_t range; | |
1ace223c SJ |
119 | int (*assess)( |
120 | const struct security_assessor *a, | |
1624114d | 121 | const SecurityInfo *info, |
1ace223c SJ |
122 | const void *data, |
123 | uint64_t *ret_badness, | |
124 | char **ret_description); | |
ec16f3b6 LP |
125 | size_t offset; |
126 | uint64_t parameter; | |
127 | bool default_dependencies_only; | |
128 | }; | |
129 | ||
1624114d MG |
130 | static SecurityInfo *security_info_new(void) { |
131 | SecurityInfo *info = new(SecurityInfo, 1); | |
132 | if (!info) | |
133 | return NULL; | |
134 | ||
135 | *info = (SecurityInfo) { | |
136 | .default_dependencies = true, | |
137 | .capability_bounding_set = UINT64_MAX, | |
138 | .restrict_namespaces = UINT64_MAX, | |
139 | ._umask = 0002, | |
140 | }; | |
141 | ||
142 | return info; | |
143 | } | |
144 | ||
145 | static SecurityInfo *security_info_free(SecurityInfo *i) { | |
ec16f3b6 | 146 | if (!i) |
1624114d | 147 | return NULL; |
ec16f3b6 LP |
148 | |
149 | free(i->id); | |
150 | free(i->type); | |
151 | free(i->load_state); | |
152 | free(i->fragment_path); | |
153 | ||
154 | free(i->user); | |
155 | ||
156 | free(i->protect_home); | |
157 | free(i->protect_system); | |
158 | ||
159 | free(i->root_directory); | |
160 | free(i->root_image); | |
161 | ||
162 | free(i->keyring_mode); | |
ed125c93 LP |
163 | free(i->protect_proc); |
164 | free(i->proc_subset); | |
ec16f3b6 LP |
165 | free(i->notify_access); |
166 | ||
167 | free(i->device_policy); | |
168 | ||
169 | strv_free(i->supplementary_groups); | |
1624114d | 170 | set_free(i->system_call_architectures); |
ec16f3b6 | 171 | |
1624114d MG |
172 | hashmap_free(i->system_call_filter); |
173 | ||
174 | return mfree(i); | |
ec16f3b6 LP |
175 | } |
176 | ||
1624114d MG |
177 | DEFINE_TRIVIAL_CLEANUP_FUNC(SecurityInfo*, security_info_free); |
178 | ||
179 | static bool security_info_runs_privileged(const SecurityInfo *i) { | |
ec16f3b6 LP |
180 | assert(i); |
181 | ||
182 | if (STRPTR_IN_SET(i->user, "0", "root")) | |
183 | return true; | |
184 | ||
185 | if (i->dynamic_user) | |
186 | return false; | |
187 | ||
188 | return isempty(i->user); | |
189 | } | |
190 | ||
191 | static int assess_bool( | |
192 | const struct security_assessor *a, | |
1624114d | 193 | const SecurityInfo *info, |
ec16f3b6 LP |
194 | const void *data, |
195 | uint64_t *ret_badness, | |
196 | char **ret_description) { | |
197 | ||
198 | const bool *b = data; | |
199 | ||
200 | assert(b); | |
201 | assert(ret_badness); | |
202 | assert(ret_description); | |
203 | ||
204 | *ret_badness = a->parameter ? *b : !*b; | |
205 | *ret_description = NULL; | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | static int assess_user( | |
211 | const struct security_assessor *a, | |
1624114d | 212 | const SecurityInfo *info, |
ec16f3b6 LP |
213 | const void *data, |
214 | uint64_t *ret_badness, | |
215 | char **ret_description) { | |
216 | ||
217 | _cleanup_free_ char *d = NULL; | |
218 | uint64_t b; | |
219 | ||
220 | assert(ret_badness); | |
221 | assert(ret_description); | |
222 | ||
223 | if (streq_ptr(info->user, NOBODY_USER_NAME)) { | |
224 | d = strdup("Service runs under as '" NOBODY_USER_NAME "' user, which should not be used for services"); | |
225 | b = 9; | |
226 | } else if (info->dynamic_user && !STR_IN_SET(info->user, "0", "root")) { | |
227 | d = strdup("Service runs under a transient non-root user identity"); | |
228 | b = 0; | |
229 | } else if (info->user && !STR_IN_SET(info->user, "0", "root", "")) { | |
230 | d = strdup("Service runs under a static non-root user identity"); | |
231 | b = 0; | |
232 | } else { | |
233 | *ret_badness = 10; | |
234 | *ret_description = NULL; | |
235 | return 0; | |
236 | } | |
237 | ||
238 | if (!d) | |
239 | return log_oom(); | |
240 | ||
241 | *ret_badness = b; | |
242 | *ret_description = TAKE_PTR(d); | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | static int assess_protect_home( | |
248 | const struct security_assessor *a, | |
1624114d | 249 | const SecurityInfo *info, |
ec16f3b6 LP |
250 | const void *data, |
251 | uint64_t *ret_badness, | |
252 | char **ret_description) { | |
253 | ||
254 | const char *description; | |
255 | uint64_t badness; | |
256 | char *copy; | |
257 | int r; | |
258 | ||
259 | assert(ret_badness); | |
260 | assert(ret_description); | |
261 | ||
262 | badness = 10; | |
263 | description = "Service has full access to home directories"; | |
264 | ||
265 | r = parse_boolean(info->protect_home); | |
266 | if (r < 0) { | |
267 | if (streq_ptr(info->protect_home, "read-only")) { | |
268 | badness = 5; | |
269 | description = "Service has read-only access to home directories"; | |
270 | } else if (streq_ptr(info->protect_home, "tmpfs")) { | |
271 | badness = 1; | |
272 | description = "Service has access to fake empty home directories"; | |
273 | } | |
274 | } else if (r > 0) { | |
275 | badness = 0; | |
276 | description = "Service has no access to home directories"; | |
277 | } | |
278 | ||
279 | copy = strdup(description); | |
280 | if (!copy) | |
281 | return log_oom(); | |
282 | ||
283 | *ret_badness = badness; | |
284 | *ret_description = copy; | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | static int assess_protect_system( | |
290 | const struct security_assessor *a, | |
1624114d | 291 | const SecurityInfo *info, |
ec16f3b6 LP |
292 | const void *data, |
293 | uint64_t *ret_badness, | |
294 | char **ret_description) { | |
295 | ||
296 | const char *description; | |
297 | uint64_t badness; | |
298 | char *copy; | |
299 | int r; | |
300 | ||
301 | assert(ret_badness); | |
302 | assert(ret_description); | |
303 | ||
304 | badness = 10; | |
1e8817b3 | 305 | description = "Service has full access to the OS file hierarchy"; |
ec16f3b6 LP |
306 | |
307 | r = parse_boolean(info->protect_system); | |
308 | if (r < 0) { | |
309 | if (streq_ptr(info->protect_system, "full")) { | |
310 | badness = 3; | |
1e8817b3 | 311 | description = "Service has very limited write access to the OS file hierarchy"; |
ec16f3b6 LP |
312 | } else if (streq_ptr(info->protect_system, "strict")) { |
313 | badness = 0; | |
314 | description = "Service has strict read-only access to the OS file hierarchy"; | |
315 | } | |
316 | } else if (r > 0) { | |
317 | badness = 5; | |
318 | description = "Service has limited write access to the OS file hierarchy"; | |
319 | } | |
320 | ||
321 | copy = strdup(description); | |
322 | if (!copy) | |
323 | return log_oom(); | |
324 | ||
325 | *ret_badness = badness; | |
326 | *ret_description = copy; | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | static int assess_root_directory( | |
332 | const struct security_assessor *a, | |
1624114d | 333 | const SecurityInfo *info, |
ec16f3b6 LP |
334 | const void *data, |
335 | uint64_t *ret_badness, | |
336 | char **ret_description) { | |
337 | ||
338 | assert(ret_badness); | |
339 | assert(ret_description); | |
340 | ||
341 | *ret_badness = | |
d909b40f | 342 | empty_or_root(info->root_directory) && |
d737b451 | 343 | empty_or_root(info->root_image); |
ec16f3b6 LP |
344 | *ret_description = NULL; |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
349 | static int assess_capability_bounding_set( | |
350 | const struct security_assessor *a, | |
1624114d | 351 | const SecurityInfo *info, |
ec16f3b6 LP |
352 | const void *data, |
353 | uint64_t *ret_badness, | |
354 | char **ret_description) { | |
355 | ||
356 | assert(ret_badness); | |
357 | assert(ret_description); | |
358 | ||
359 | *ret_badness = !!(info->capability_bounding_set & a->parameter); | |
360 | *ret_description = NULL; | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | static int assess_umask( | |
366 | const struct security_assessor *a, | |
1624114d | 367 | const SecurityInfo *info, |
ec16f3b6 LP |
368 | const void *data, |
369 | uint64_t *ret_badness, | |
370 | char **ret_description) { | |
371 | ||
372 | char *copy = NULL; | |
373 | const char *d; | |
374 | uint64_t b; | |
375 | ||
376 | assert(ret_badness); | |
377 | assert(ret_description); | |
378 | ||
379 | if (!FLAGS_SET(info->_umask, 0002)) { | |
380 | d = "Files created by service are world-writable by default"; | |
381 | b = 10; | |
382 | } else if (!FLAGS_SET(info->_umask, 0004)) { | |
383 | d = "Files created by service are world-readable by default"; | |
384 | b = 5; | |
385 | } else if (!FLAGS_SET(info->_umask, 0020)) { | |
386 | d = "Files created by service are group-writable by default"; | |
387 | b = 2; | |
388 | } else if (!FLAGS_SET(info->_umask, 0040)) { | |
389 | d = "Files created by service are group-readable by default"; | |
390 | b = 1; | |
391 | } else { | |
392 | d = "Files created by service are accessible only by service's own user by default"; | |
393 | b = 0; | |
394 | } | |
395 | ||
396 | copy = strdup(d); | |
397 | if (!copy) | |
398 | return log_oom(); | |
399 | ||
400 | *ret_badness = b; | |
401 | *ret_description = copy; | |
402 | ||
403 | return 0; | |
404 | } | |
405 | ||
406 | static int assess_keyring_mode( | |
407 | const struct security_assessor *a, | |
1624114d | 408 | const SecurityInfo *info, |
ec16f3b6 LP |
409 | const void *data, |
410 | uint64_t *ret_badness, | |
411 | char **ret_description) { | |
412 | ||
413 | assert(ret_badness); | |
414 | assert(ret_description); | |
415 | ||
416 | *ret_badness = !streq_ptr(info->keyring_mode, "private"); | |
417 | *ret_description = NULL; | |
418 | ||
419 | return 0; | |
420 | } | |
421 | ||
ed125c93 LP |
422 | static int assess_protect_proc( |
423 | const struct security_assessor *a, | |
1624114d | 424 | const SecurityInfo *info, |
ed125c93 LP |
425 | const void *data, |
426 | uint64_t *ret_badness, | |
427 | char **ret_description) { | |
428 | ||
429 | assert(ret_badness); | |
430 | assert(ret_description); | |
431 | ||
432 | if (streq_ptr(info->protect_proc, "noaccess")) | |
433 | *ret_badness = 1; | |
434 | else if (STRPTR_IN_SET(info->protect_proc, "invisible", "ptraceable")) | |
435 | *ret_badness = 0; | |
436 | else | |
437 | *ret_badness = 3; | |
438 | ||
439 | *ret_description = NULL; | |
440 | ||
441 | return 0; | |
442 | } | |
443 | ||
444 | static int assess_proc_subset( | |
445 | const struct security_assessor *a, | |
1624114d | 446 | const SecurityInfo *info, |
ed125c93 LP |
447 | const void *data, |
448 | uint64_t *ret_badness, | |
449 | char **ret_description) { | |
450 | ||
451 | assert(ret_badness); | |
452 | assert(ret_description); | |
453 | ||
454 | *ret_badness = !streq_ptr(info->proc_subset, "pid"); | |
455 | *ret_description = NULL; | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
ec16f3b6 LP |
460 | static int assess_notify_access( |
461 | const struct security_assessor *a, | |
1624114d | 462 | const SecurityInfo *info, |
ec16f3b6 LP |
463 | const void *data, |
464 | uint64_t *ret_badness, | |
465 | char **ret_description) { | |
466 | ||
467 | assert(ret_badness); | |
468 | assert(ret_description); | |
469 | ||
470 | *ret_badness = streq_ptr(info->notify_access, "all"); | |
471 | *ret_description = NULL; | |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
476 | static int assess_remove_ipc( | |
477 | const struct security_assessor *a, | |
1624114d | 478 | const SecurityInfo *info, |
ec16f3b6 LP |
479 | const void *data, |
480 | uint64_t *ret_badness, | |
481 | char **ret_description) { | |
482 | ||
483 | assert(ret_badness); | |
484 | assert(ret_description); | |
485 | ||
486 | if (security_info_runs_privileged(info)) | |
487 | *ret_badness = UINT64_MAX; | |
488 | else | |
489 | *ret_badness = !info->remove_ipc; | |
490 | ||
491 | *ret_description = NULL; | |
492 | return 0; | |
493 | } | |
494 | ||
495 | static int assess_supplementary_groups( | |
496 | const struct security_assessor *a, | |
1624114d | 497 | const SecurityInfo *info, |
ec16f3b6 LP |
498 | const void *data, |
499 | uint64_t *ret_badness, | |
500 | char **ret_description) { | |
501 | ||
502 | assert(ret_badness); | |
503 | assert(ret_description); | |
504 | ||
505 | if (security_info_runs_privileged(info)) | |
506 | *ret_badness = UINT64_MAX; | |
507 | else | |
508 | *ret_badness = !strv_isempty(info->supplementary_groups); | |
509 | ||
510 | *ret_description = NULL; | |
511 | return 0; | |
512 | } | |
513 | ||
514 | static int assess_restrict_namespaces( | |
515 | const struct security_assessor *a, | |
1624114d | 516 | const SecurityInfo *info, |
ec16f3b6 LP |
517 | const void *data, |
518 | uint64_t *ret_badness, | |
519 | char **ret_description) { | |
520 | ||
521 | assert(ret_badness); | |
522 | assert(ret_description); | |
523 | ||
524 | *ret_badness = !!(info->restrict_namespaces & a->parameter); | |
525 | *ret_description = NULL; | |
526 | ||
527 | return 0; | |
528 | } | |
529 | ||
530 | static int assess_system_call_architectures( | |
531 | const struct security_assessor *a, | |
1624114d | 532 | const SecurityInfo *info, |
ec16f3b6 LP |
533 | const void *data, |
534 | uint64_t *ret_badness, | |
535 | char **ret_description) { | |
536 | ||
537 | char *d; | |
538 | uint64_t b; | |
539 | ||
540 | assert(ret_badness); | |
541 | assert(ret_description); | |
542 | ||
1624114d | 543 | if (set_isempty(info->system_call_architectures)) { |
ec16f3b6 LP |
544 | b = 10; |
545 | d = strdup("Service may execute system calls with all ABIs"); | |
1624114d MG |
546 | } else if (set_contains(info->system_call_architectures, "native") && |
547 | set_size(info->system_call_architectures) == 1) { | |
ec16f3b6 LP |
548 | b = 0; |
549 | d = strdup("Service may execute system calls only with native ABI"); | |
550 | } else { | |
551 | b = 8; | |
552 | d = strdup("Service may execute system calls with multiple ABIs"); | |
553 | } | |
554 | ||
555 | if (!d) | |
556 | return log_oom(); | |
557 | ||
558 | *ret_badness = b; | |
559 | *ret_description = d; | |
560 | ||
561 | return 0; | |
562 | } | |
563 | ||
3a5d89fa WKI |
564 | #if HAVE_SECCOMP |
565 | ||
1624114d | 566 | static bool syscall_names_in_filter(Hashmap *s, bool allow_list, const SyscallFilterSet *f, const char **ret_offending_syscall) { |
ec16f3b6 LP |
567 | const char *syscall; |
568 | ||
569 | NULSTR_FOREACH(syscall, f->value) { | |
95832a0f | 570 | int id; |
ec16f3b6 LP |
571 | |
572 | if (syscall[0] == '@') { | |
573 | const SyscallFilterSet *g; | |
ec16f3b6 | 574 | |
95832a0f | 575 | assert_se(g = syscall_filter_set_find(syscall)); |
a9134af2 | 576 | if (syscall_names_in_filter(s, allow_list, g, ret_offending_syscall)) |
95832a0f | 577 | return true; /* bad! */ |
ec16f3b6 | 578 | |
95832a0f | 579 | continue; |
ec16f3b6 LP |
580 | } |
581 | ||
95832a0f YW |
582 | /* Let's see if the system call actually exists on this platform, before complaining */ |
583 | id = seccomp_syscall_resolve_name(syscall); | |
584 | if (id < 0) | |
585 | continue; | |
586 | ||
1624114d | 587 | if (hashmap_contains(s, syscall) == allow_list) { |
ec16f3b6 | 588 | log_debug("Offending syscall filter item: %s", syscall); |
a9134af2 ZJS |
589 | if (ret_offending_syscall) |
590 | *ret_offending_syscall = syscall; | |
ec16f3b6 LP |
591 | return true; /* bad! */ |
592 | } | |
593 | } | |
594 | ||
a9134af2 | 595 | *ret_offending_syscall = NULL; |
ec16f3b6 LP |
596 | return false; |
597 | } | |
598 | ||
599 | static int assess_system_call_filter( | |
600 | const struct security_assessor *a, | |
1624114d | 601 | const SecurityInfo *info, |
ec16f3b6 LP |
602 | const void *data, |
603 | uint64_t *ret_badness, | |
604 | char **ret_description) { | |
605 | ||
ec16f3b6 LP |
606 | assert(a); |
607 | assert(info); | |
608 | assert(ret_badness); | |
609 | assert(ret_description); | |
610 | ||
611 | assert(a->parameter < _SYSCALL_FILTER_SET_MAX); | |
a9134af2 ZJS |
612 | const SyscallFilterSet *f = syscall_filter_sets + a->parameter; |
613 | ||
12619d0a | 614 | _cleanup_free_ char *d = NULL; |
a9134af2 | 615 | uint64_t b; |
12619d0a | 616 | int r; |
ec16f3b6 | 617 | |
1624114d | 618 | if (!info->system_call_filter_allow_list && hashmap_isempty(info->system_call_filter)) { |
12619d0a | 619 | r = free_and_strdup(&d, "Service does not filter system calls"); |
ec16f3b6 LP |
620 | b = 10; |
621 | } else { | |
622 | bool bad; | |
a9134af2 | 623 | const char *offender = NULL; |
ec16f3b6 LP |
624 | |
625 | log_debug("Analyzing system call filter, checking against: %s", f->name); | |
a9134af2 | 626 | bad = syscall_names_in_filter(info->system_call_filter, info->system_call_filter_allow_list, f, &offender); |
ec16f3b6 LP |
627 | log_debug("Result: %s", bad ? "bad" : "good"); |
628 | ||
6b000af4 | 629 | if (info->system_call_filter_allow_list) { |
ec16f3b6 | 630 | if (bad) { |
12619d0a ZJS |
631 | r = asprintf(&d, "System call allow list defined for service, and %s is included " |
632 | "(e.g. %s is allowed)", | |
633 | f->name, offender); | |
ec16f3b6 LP |
634 | b = 9; |
635 | } else { | |
12619d0a ZJS |
636 | r = asprintf(&d, "System call allow list defined for service, and %s is not included", |
637 | f->name); | |
ec16f3b6 LP |
638 | b = 0; |
639 | } | |
640 | } else { | |
641 | if (bad) { | |
12619d0a ZJS |
642 | r = asprintf(&d, "System call deny list defined for service, and %s is not included " |
643 | "(e.g. %s is allowed)", | |
644 | f->name, offender); | |
ec16f3b6 LP |
645 | b = 10; |
646 | } else { | |
12619d0a ZJS |
647 | r = asprintf(&d, "System call deny list defined for service, and %s is included", |
648 | f->name); | |
01ecb367 | 649 | b = 0; |
ec16f3b6 LP |
650 | } |
651 | } | |
652 | } | |
12619d0a | 653 | if (r < 0) |
ec16f3b6 LP |
654 | return log_oom(); |
655 | ||
656 | *ret_badness = b; | |
12619d0a | 657 | *ret_description = TAKE_PTR(d); |
ec16f3b6 LP |
658 | |
659 | return 0; | |
660 | } | |
661 | ||
3a5d89fa WKI |
662 | #endif |
663 | ||
ec16f3b6 LP |
664 | static int assess_ip_address_allow( |
665 | const struct security_assessor *a, | |
1624114d | 666 | const SecurityInfo *info, |
ec16f3b6 LP |
667 | const void *data, |
668 | uint64_t *ret_badness, | |
669 | char **ret_description) { | |
670 | ||
671 | char *d = NULL; | |
672 | uint64_t b; | |
673 | ||
674 | assert(info); | |
675 | assert(ret_badness); | |
676 | assert(ret_description); | |
677 | ||
fab34748 KL |
678 | if (info->ip_filters_custom_ingress || info->ip_filters_custom_egress) { |
679 | d = strdup("Service defines custom ingress/egress IP filters with BPF programs"); | |
680 | b = 0; | |
681 | } else if (!info->ip_address_deny_all) { | |
6b000af4 | 682 | d = strdup("Service does not define an IP address allow list"); |
ec16f3b6 LP |
683 | b = 10; |
684 | } else if (info->ip_address_allow_other) { | |
6b000af4 | 685 | d = strdup("Service defines IP address allow list with non-localhost entries"); |
ec16f3b6 LP |
686 | b = 5; |
687 | } else if (info->ip_address_allow_localhost) { | |
6b000af4 | 688 | d = strdup("Service defines IP address allow list with only localhost entries"); |
ec16f3b6 LP |
689 | b = 2; |
690 | } else { | |
691 | d = strdup("Service blocks all IP address ranges"); | |
692 | b = 0; | |
693 | } | |
694 | ||
695 | if (!d) | |
696 | return log_oom(); | |
697 | ||
698 | *ret_badness = b; | |
699 | *ret_description = d; | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
704 | static int assess_device_allow( | |
705 | const struct security_assessor *a, | |
1624114d | 706 | const SecurityInfo *info, |
ec16f3b6 LP |
707 | const void *data, |
708 | uint64_t *ret_badness, | |
709 | char **ret_description) { | |
710 | ||
711 | char *d = NULL; | |
712 | uint64_t b; | |
713 | ||
714 | assert(info); | |
715 | assert(ret_badness); | |
716 | assert(ret_description); | |
717 | ||
718 | if (STRPTR_IN_SET(info->device_policy, "strict", "closed")) { | |
719 | ||
720 | if (info->device_allow_non_empty) { | |
721 | d = strdup("Service has a device ACL with some special devices"); | |
722 | b = 5; | |
723 | } else { | |
724 | d = strdup("Service has a minimal device ACL"); | |
725 | b = 0; | |
726 | } | |
727 | } else { | |
728 | d = strdup("Service has no device ACL"); | |
729 | b = 10; | |
730 | } | |
731 | ||
732 | if (!d) | |
733 | return log_oom(); | |
734 | ||
735 | *ret_badness = b; | |
736 | *ret_description = d; | |
737 | ||
738 | return 0; | |
739 | } | |
740 | ||
741 | static int assess_ambient_capabilities( | |
742 | const struct security_assessor *a, | |
1624114d | 743 | const SecurityInfo *info, |
ec16f3b6 LP |
744 | const void *data, |
745 | uint64_t *ret_badness, | |
746 | char **ret_description) { | |
747 | ||
748 | assert(ret_badness); | |
749 | assert(ret_description); | |
750 | ||
751 | *ret_badness = info->ambient_capabilities != 0; | |
752 | *ret_description = NULL; | |
753 | ||
754 | return 0; | |
755 | } | |
756 | ||
757 | static const struct security_assessor security_assessor_table[] = { | |
758 | { | |
759 | .id = "User=/DynamicUser=", | |
3838d22c | 760 | .json_field = "UserOrDynamicUser", |
ec16f3b6 LP |
761 | .description_bad = "Service runs as root user", |
762 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#User=", | |
763 | .weight = 2000, | |
764 | .range = 10, | |
765 | .assess = assess_user, | |
766 | }, | |
767 | { | |
768 | .id = "SupplementaryGroups=", | |
3838d22c | 769 | .json_field = "SupplementaryGroups", |
ec16f3b6 LP |
770 | .description_good = "Service has no supplementary groups", |
771 | .description_bad = "Service runs with supplementary groups", | |
772 | .description_na = "Service runs as root, option does not matter", | |
773 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SupplementaryGroups=", | |
774 | .weight = 200, | |
775 | .range = 1, | |
776 | .assess = assess_supplementary_groups, | |
777 | }, | |
778 | { | |
779 | .id = "PrivateDevices=", | |
3838d22c | 780 | .json_field = "PrivateDevices", |
ec16f3b6 LP |
781 | .description_good = "Service has no access to hardware devices", |
782 | .description_bad = "Service potentially has access to hardware devices", | |
783 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateDevices=", | |
784 | .weight = 1000, | |
785 | .range = 1, | |
786 | .assess = assess_bool, | |
1624114d | 787 | .offset = offsetof(SecurityInfo, private_devices), |
ec16f3b6 LP |
788 | }, |
789 | { | |
790 | .id = "PrivateMounts=", | |
3838d22c | 791 | .json_field = "PrivateMounts", |
ec16f3b6 LP |
792 | .description_good = "Service cannot install system mounts", |
793 | .description_bad = "Service may install system mounts", | |
794 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateMounts=", | |
795 | .weight = 1000, | |
796 | .range = 1, | |
797 | .assess = assess_bool, | |
1624114d | 798 | .offset = offsetof(SecurityInfo, private_mounts), |
ec16f3b6 LP |
799 | }, |
800 | { | |
801 | .id = "PrivateNetwork=", | |
3838d22c | 802 | .json_field = "PrivateNetwork", |
ec16f3b6 LP |
803 | .description_good = "Service has no access to the host's network", |
804 | .description_bad = "Service has access to the host's network", | |
805 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateNetwork=", | |
806 | .weight = 2500, | |
807 | .range = 1, | |
808 | .assess = assess_bool, | |
1624114d | 809 | .offset = offsetof(SecurityInfo, private_network), |
ec16f3b6 LP |
810 | }, |
811 | { | |
812 | .id = "PrivateTmp=", | |
3838d22c | 813 | .json_field = "PrivateTmp", |
ec16f3b6 LP |
814 | .description_good = "Service has no access to other software's temporary files", |
815 | .description_bad = "Service has access to other software's temporary files", | |
816 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateTmp=", | |
817 | .weight = 1000, | |
818 | .range = 1, | |
819 | .assess = assess_bool, | |
1624114d | 820 | .offset = offsetof(SecurityInfo, private_tmp), |
ec16f3b6 LP |
821 | .default_dependencies_only = true, |
822 | }, | |
823 | { | |
824 | .id = "PrivateUsers=", | |
3838d22c | 825 | .json_field = "PrivateUsers", |
ec16f3b6 LP |
826 | .description_good = "Service does not have access to other users", |
827 | .description_bad = "Service has access to other users", | |
828 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#PrivateUsers=", | |
829 | .weight = 1000, | |
830 | .range = 1, | |
831 | .assess = assess_bool, | |
1624114d | 832 | .offset = offsetof(SecurityInfo, private_users), |
ec16f3b6 LP |
833 | }, |
834 | { | |
835 | .id = "ProtectControlGroups=", | |
3838d22c | 836 | .json_field = "ProtectControlGroups", |
ec16f3b6 | 837 | .description_good = "Service cannot modify the control group file system", |
287cf2d8 | 838 | .description_bad = "Service may modify the control group file system", |
ec16f3b6 LP |
839 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectControlGroups=", |
840 | .weight = 1000, | |
841 | .range = 1, | |
842 | .assess = assess_bool, | |
1624114d | 843 | .offset = offsetof(SecurityInfo, protect_control_groups), |
ec16f3b6 LP |
844 | }, |
845 | { | |
846 | .id = "ProtectKernelModules=", | |
3838d22c | 847 | .json_field = "ProtectKernelModules", |
ec16f3b6 LP |
848 | .description_good = "Service cannot load or read kernel modules", |
849 | .description_bad = "Service may load or read kernel modules", | |
850 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelModules=", | |
851 | .weight = 1000, | |
852 | .range = 1, | |
853 | .assess = assess_bool, | |
1624114d | 854 | .offset = offsetof(SecurityInfo, protect_kernel_modules), |
ec16f3b6 LP |
855 | }, |
856 | { | |
857 | .id = "ProtectKernelTunables=", | |
3838d22c | 858 | .json_field = "ProtectKernelTunables", |
ec16f3b6 LP |
859 | .description_good = "Service cannot alter kernel tunables (/proc/sys, …)", |
860 | .description_bad = "Service may alter kernel tunables", | |
861 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelTunables=", | |
862 | .weight = 1000, | |
863 | .range = 1, | |
864 | .assess = assess_bool, | |
1624114d | 865 | .offset = offsetof(SecurityInfo, protect_kernel_tunables), |
ec16f3b6 | 866 | }, |
82dce83b KK |
867 | { |
868 | .id = "ProtectKernelLogs=", | |
3838d22c | 869 | .json_field = "ProtectKernelLogs", |
82dce83b KK |
870 | .description_good = "Service cannot read from or write to the kernel log ring buffer", |
871 | .description_bad = "Service may read from or write to the kernel log ring buffer", | |
872 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectKernelLogs=", | |
873 | .weight = 1000, | |
874 | .range = 1, | |
875 | .assess = assess_bool, | |
1624114d | 876 | .offset = offsetof(SecurityInfo, protect_kernel_logs), |
82dce83b | 877 | }, |
9f37272a KK |
878 | { |
879 | .id = "ProtectClock=", | |
3838d22c | 880 | .json_field = "ProtectClock", |
9f37272a KK |
881 | .description_good = "Service cannot write to the hardware clock or system clock", |
882 | .description_bad = "Service may write to the hardware clock or system clock", | |
883 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectClock=", | |
884 | .weight = 1000, | |
885 | .range = 1, | |
886 | .assess = assess_bool, | |
1624114d | 887 | .offset = offsetof(SecurityInfo, protect_clock), |
9f37272a | 888 | }, |
ec16f3b6 LP |
889 | { |
890 | .id = "ProtectHome=", | |
3838d22c | 891 | .json_field = "ProtectHome", |
ec16f3b6 LP |
892 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectHome=", |
893 | .weight = 1000, | |
894 | .range = 10, | |
895 | .assess = assess_protect_home, | |
896 | .default_dependencies_only = true, | |
897 | }, | |
527bd7f1 TM |
898 | { |
899 | .id = "ProtectHostname=", | |
3838d22c | 900 | .json_field = "ProtectHostname", |
527bd7f1 TM |
901 | .description_good = "Service cannot change system host/domainname", |
902 | .description_bad = "Service may change system host/domainname", | |
903 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectHostname=", | |
904 | .weight = 50, | |
905 | .range = 1, | |
906 | .assess = assess_bool, | |
1624114d | 907 | .offset = offsetof(SecurityInfo, protect_hostname), |
527bd7f1 | 908 | }, |
ec16f3b6 LP |
909 | { |
910 | .id = "ProtectSystem=", | |
3838d22c | 911 | .json_field = "ProtectSystem", |
ec16f3b6 LP |
912 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectSystem=", |
913 | .weight = 1000, | |
914 | .range = 10, | |
915 | .assess = assess_protect_system, | |
916 | .default_dependencies_only = true, | |
917 | }, | |
918 | { | |
919 | .id = "RootDirectory=/RootImage=", | |
3838d22c | 920 | .json_field = "RootDirectoryOrRootImage", |
ec16f3b6 LP |
921 | .description_good = "Service has its own root directory/image", |
922 | .description_bad = "Service runs within the host's root directory", | |
923 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RootDirectory=", | |
924 | .weight = 200, | |
925 | .range = 1, | |
926 | .assess = assess_root_directory, | |
927 | .default_dependencies_only = true, | |
928 | }, | |
929 | { | |
930 | .id = "LockPersonality=", | |
3838d22c | 931 | .json_field = "LockPersonality", |
ec16f3b6 LP |
932 | .description_good = "Service cannot change ABI personality", |
933 | .description_bad = "Service may change ABI personality", | |
934 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#LockPersonality=", | |
935 | .weight = 100, | |
936 | .range = 1, | |
937 | .assess = assess_bool, | |
1624114d | 938 | .offset = offsetof(SecurityInfo, lock_personality), |
ec16f3b6 LP |
939 | }, |
940 | { | |
941 | .id = "MemoryDenyWriteExecute=", | |
3838d22c | 942 | .json_field = "MemoryDenyWriteExecute", |
ec16f3b6 LP |
943 | .description_good = "Service cannot create writable executable memory mappings", |
944 | .description_bad = "Service may create writable executable memory mappings", | |
945 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#MemoryDenyWriteExecute=", | |
946 | .weight = 100, | |
947 | .range = 1, | |
948 | .assess = assess_bool, | |
1624114d | 949 | .offset = offsetof(SecurityInfo, memory_deny_write_execute), |
ec16f3b6 LP |
950 | }, |
951 | { | |
952 | .id = "NoNewPrivileges=", | |
3838d22c | 953 | .json_field = "NoNewPrivileges", |
ec16f3b6 LP |
954 | .description_good = "Service processes cannot acquire new privileges", |
955 | .description_bad = "Service processes may acquire new privileges", | |
956 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#NoNewPrivileges=", | |
957 | .weight = 1000, | |
958 | .range = 1, | |
959 | .assess = assess_bool, | |
1624114d | 960 | .offset = offsetof(SecurityInfo, no_new_privileges), |
ec16f3b6 LP |
961 | }, |
962 | { | |
963 | .id = "CapabilityBoundingSet=~CAP_SYS_ADMIN", | |
3838d22c | 964 | .json_field = "CapabilityBoundingSet_CAP_SYS_ADMIN", |
ec16f3b6 LP |
965 | .description_good = "Service has no administrator privileges", |
966 | .description_bad = "Service has administrator privileges", | |
967 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
968 | .weight = 1500, | |
969 | .range = 1, | |
970 | .assess = assess_capability_bounding_set, | |
971 | .parameter = UINT64_C(1) << CAP_SYS_ADMIN, | |
972 | }, | |
973 | { | |
974 | .id = "CapabilityBoundingSet=~CAP_SET(UID|GID|PCAP)", | |
3838d22c | 975 | .json_field = "CapabilityBoundingSet_CAP_SET_UID_GID_PCAP", |
ec16f3b6 LP |
976 | .description_good = "Service cannot change UID/GID identities/capabilities", |
977 | .description_bad = "Service may change UID/GID identities/capabilities", | |
978 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
979 | .weight = 1500, | |
980 | .range = 1, | |
981 | .assess = assess_capability_bounding_set, | |
982 | .parameter = (UINT64_C(1) << CAP_SETUID)| | |
983 | (UINT64_C(1) << CAP_SETGID)| | |
984 | (UINT64_C(1) << CAP_SETPCAP), | |
985 | }, | |
986 | { | |
987 | .id = "CapabilityBoundingSet=~CAP_SYS_PTRACE", | |
3838d22c | 988 | .json_field = "CapabilityBoundingSet_CAP_SYS_PTRACE", |
ec16f3b6 LP |
989 | .description_good = "Service has no ptrace() debugging abilities", |
990 | .description_bad = "Service has ptrace() debugging abilities", | |
991 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
992 | .weight = 1500, | |
993 | .range = 1, | |
994 | .assess = assess_capability_bounding_set, | |
995 | .parameter = (UINT64_C(1) << CAP_SYS_PTRACE), | |
996 | }, | |
997 | { | |
998 | .id = "CapabilityBoundingSet=~CAP_SYS_TIME", | |
3838d22c | 999 | .json_field = "CapabilityBoundingSet_CAP_SYS_TIME", |
ec16f3b6 LP |
1000 | .description_good = "Service processes cannot change the system clock", |
1001 | .description_bad = "Service processes may change the system clock", | |
1002 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1003 | .weight = 1000, | |
1004 | .range = 1, | |
1005 | .assess = assess_capability_bounding_set, | |
1006 | .parameter = UINT64_C(1) << CAP_SYS_TIME, | |
1007 | }, | |
1008 | { | |
1009 | .id = "CapabilityBoundingSet=~CAP_NET_ADMIN", | |
3838d22c | 1010 | .json_field = "CapabilityBoundingSet_CAP_NET_ADMIN", |
ec16f3b6 LP |
1011 | .description_good = "Service has no network configuration privileges", |
1012 | .description_bad = "Service has network configuration privileges", | |
1013 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1014 | .weight = 1000, | |
1015 | .range = 1, | |
1016 | .assess = assess_capability_bounding_set, | |
1017 | .parameter = (UINT64_C(1) << CAP_NET_ADMIN), | |
1018 | }, | |
1019 | { | |
b5ef6610 | 1020 | .id = "CapabilityBoundingSet=~CAP_SYS_RAWIO", |
3838d22c | 1021 | .json_field = "CapabilityBoundingSet_CAP_SYS_RAWIO", |
ec16f3b6 LP |
1022 | .description_good = "Service has no raw I/O access", |
1023 | .description_bad = "Service has raw I/O access", | |
1024 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1025 | .weight = 1000, | |
1026 | .range = 1, | |
1027 | .assess = assess_capability_bounding_set, | |
1028 | .parameter = (UINT64_C(1) << CAP_SYS_RAWIO), | |
1029 | }, | |
1030 | { | |
1031 | .id = "CapabilityBoundingSet=~CAP_SYS_MODULE", | |
3838d22c | 1032 | .json_field = "CapabilityBoundingSet_CAP_SYS_MODULE", |
ec16f3b6 LP |
1033 | .description_good = "Service cannot load kernel modules", |
1034 | .description_bad = "Service may load kernel modules", | |
1035 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1036 | .weight = 1000, | |
1037 | .range = 1, | |
1038 | .assess = assess_capability_bounding_set, | |
1039 | .parameter = (UINT64_C(1) << CAP_SYS_MODULE), | |
1040 | }, | |
1041 | { | |
1042 | .id = "CapabilityBoundingSet=~CAP_AUDIT_*", | |
3838d22c | 1043 | .json_field = "CapabilityBoundingSet_CAP_AUDIT", |
ec16f3b6 LP |
1044 | .description_good = "Service has no audit subsystem access", |
1045 | .description_bad = "Service has audit subsystem access", | |
1046 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1047 | .weight = 500, | |
1048 | .range = 1, | |
1049 | .assess = assess_capability_bounding_set, | |
1050 | .parameter = (UINT64_C(1) << CAP_AUDIT_CONTROL) | | |
1051 | (UINT64_C(1) << CAP_AUDIT_READ) | | |
1052 | (UINT64_C(1) << CAP_AUDIT_WRITE), | |
1053 | }, | |
1054 | { | |
1055 | .id = "CapabilityBoundingSet=~CAP_SYSLOG", | |
3838d22c | 1056 | .json_field = "CapabilityBoundingSet_CAP_SYSLOG", |
ec16f3b6 LP |
1057 | .description_good = "Service has no access to kernel logging", |
1058 | .description_bad = "Service has access to kernel logging", | |
1059 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1060 | .weight = 500, | |
1061 | .range = 1, | |
1062 | .assess = assess_capability_bounding_set, | |
1063 | .parameter = (UINT64_C(1) << CAP_SYSLOG), | |
1064 | }, | |
1065 | { | |
1066 | .id = "CapabilityBoundingSet=~CAP_SYS_(NICE|RESOURCE)", | |
3838d22c | 1067 | .json_field = "CapabilityBoundingSet_CAP_SYS_NICE_RESOURCE", |
ec16f3b6 LP |
1068 | .description_good = "Service has no privileges to change resource use parameters", |
1069 | .description_bad = "Service has privileges to change resource use parameters", | |
1070 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1071 | .weight = 500, | |
1072 | .range = 1, | |
1073 | .assess = assess_capability_bounding_set, | |
1074 | .parameter = (UINT64_C(1) << CAP_SYS_NICE) | | |
1075 | (UINT64_C(1) << CAP_SYS_RESOURCE), | |
1076 | }, | |
1077 | { | |
1078 | .id = "CapabilityBoundingSet=~CAP_MKNOD", | |
3838d22c | 1079 | .json_field = "CapabilityBoundingSet_CAP_MKNOD", |
ec16f3b6 LP |
1080 | .description_good = "Service cannot create device nodes", |
1081 | .description_bad = "Service may create device nodes", | |
1082 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1083 | .weight = 500, | |
1084 | .range = 1, | |
1085 | .assess = assess_capability_bounding_set, | |
1086 | .parameter = (UINT64_C(1) << CAP_MKNOD), | |
1087 | }, | |
1088 | { | |
1089 | .id = "CapabilityBoundingSet=~CAP_(CHOWN|FSETID|SETFCAP)", | |
3838d22c | 1090 | .json_field = "CapabilityBoundingSet_CAP_CHOWN_FSETID_SETFCAP", |
ec16f3b6 LP |
1091 | .description_good = "Service cannot change file ownership/access mode/capabilities", |
1092 | .description_bad = "Service may change file ownership/access mode/capabilities unrestricted", | |
1093 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1094 | .weight = 1000, | |
1095 | .range = 1, | |
1096 | .assess = assess_capability_bounding_set, | |
1097 | .parameter = (UINT64_C(1) << CAP_CHOWN) | | |
1098 | (UINT64_C(1) << CAP_FSETID) | | |
1099 | (UINT64_C(1) << CAP_SETFCAP), | |
1100 | }, | |
1101 | { | |
1102 | .id = "CapabilityBoundingSet=~CAP_(DAC_*|FOWNER|IPC_OWNER)", | |
3838d22c | 1103 | .json_field = "CapabilityBoundingSet_CAP_DAC_FOWNER_IPC_OWNER", |
ec16f3b6 LP |
1104 | .description_good = "Service cannot override UNIX file/IPC permission checks", |
1105 | .description_bad = "Service may override UNIX file/IPC permission checks", | |
1106 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1107 | .weight = 1000, | |
1108 | .range = 1, | |
1109 | .assess = assess_capability_bounding_set, | |
1110 | .parameter = (UINT64_C(1) << CAP_DAC_OVERRIDE) | | |
1111 | (UINT64_C(1) << CAP_DAC_READ_SEARCH) | | |
1112 | (UINT64_C(1) << CAP_FOWNER) | | |
1113 | (UINT64_C(1) << CAP_IPC_OWNER), | |
1114 | }, | |
1115 | { | |
1116 | .id = "CapabilityBoundingSet=~CAP_KILL", | |
3838d22c | 1117 | .json_field = "CapabilityBoundingSet_CAP_KILL", |
ec16f3b6 LP |
1118 | .description_good = "Service cannot send UNIX signals to arbitrary processes", |
1119 | .description_bad = "Service may send UNIX signals to arbitrary processes", | |
1120 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1121 | .weight = 500, | |
1122 | .range = 1, | |
1123 | .assess = assess_capability_bounding_set, | |
1124 | .parameter = (UINT64_C(1) << CAP_KILL), | |
1125 | }, | |
1126 | { | |
1127 | .id = "CapabilityBoundingSet=~CAP_NET_(BIND_SERVICE|BROADCAST|RAW)", | |
3838d22c | 1128 | .json_field = "CapabilityBoundingSet_CAP_NET_BIND_SERVICE_BROADCAST_RAW)", |
ec16f3b6 LP |
1129 | .description_good = "Service has no elevated networking privileges", |
1130 | .description_bad = "Service has elevated networking privileges", | |
1131 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1132 | .weight = 500, | |
1133 | .range = 1, | |
1134 | .assess = assess_capability_bounding_set, | |
1135 | .parameter = (UINT64_C(1) << CAP_NET_BIND_SERVICE) | | |
1136 | (UINT64_C(1) << CAP_NET_BROADCAST) | | |
1137 | (UINT64_C(1) << CAP_NET_RAW), | |
1138 | }, | |
1139 | { | |
1140 | .id = "CapabilityBoundingSet=~CAP_SYS_BOOT", | |
3838d22c | 1141 | .json_field = "CapabilityBoundingSet_CAP_SYS_BOOT", |
ec16f3b6 LP |
1142 | .description_good = "Service cannot issue reboot()", |
1143 | .description_bad = "Service may issue reboot()", | |
1144 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1145 | .weight = 100, | |
1146 | .range = 1, | |
1147 | .assess = assess_capability_bounding_set, | |
1148 | .parameter = (UINT64_C(1) << CAP_SYS_BOOT), | |
1149 | }, | |
1150 | { | |
1151 | .id = "CapabilityBoundingSet=~CAP_MAC_*", | |
3838d22c | 1152 | .json_field = "CapabilityBoundingSet_CAP_MAC", |
ec16f3b6 LP |
1153 | .description_good = "Service cannot adjust SMACK MAC", |
1154 | .description_bad = "Service may adjust SMACK MAC", | |
1155 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1156 | .weight = 100, | |
1157 | .range = 1, | |
1158 | .assess = assess_capability_bounding_set, | |
1159 | .parameter = (UINT64_C(1) << CAP_MAC_ADMIN)| | |
1160 | (UINT64_C(1) << CAP_MAC_OVERRIDE), | |
1161 | }, | |
1162 | { | |
1163 | .id = "CapabilityBoundingSet=~CAP_LINUX_IMMUTABLE", | |
3838d22c | 1164 | .json_field = "CapabilityBoundingSet_CAP_LINUX_IMMUTABLE", |
ec16f3b6 LP |
1165 | .description_good = "Service cannot mark files immutable", |
1166 | .description_bad = "Service may mark files immutable", | |
1167 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1168 | .weight = 75, | |
1169 | .range = 1, | |
1170 | .assess = assess_capability_bounding_set, | |
1171 | .parameter = (UINT64_C(1) << CAP_LINUX_IMMUTABLE), | |
1172 | }, | |
1173 | { | |
1174 | .id = "CapabilityBoundingSet=~CAP_IPC_LOCK", | |
3838d22c | 1175 | .json_field = "CapabilityBoundingSet_CAP_IPC_LOCK", |
ec16f3b6 LP |
1176 | .description_good = "Service cannot lock memory into RAM", |
1177 | .description_bad = "Service may lock memory into RAM", | |
1178 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1179 | .weight = 50, | |
1180 | .range = 1, | |
1181 | .assess = assess_capability_bounding_set, | |
1182 | .parameter = (UINT64_C(1) << CAP_IPC_LOCK), | |
1183 | }, | |
1184 | { | |
1185 | .id = "CapabilityBoundingSet=~CAP_SYS_CHROOT", | |
3838d22c | 1186 | .json_field = "CapabilityBoundingSet_CAP_SYS_CHROOT", |
ec16f3b6 LP |
1187 | .description_good = "Service cannot issue chroot()", |
1188 | .description_bad = "Service may issue chroot()", | |
1189 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1190 | .weight = 50, | |
1191 | .range = 1, | |
1192 | .assess = assess_capability_bounding_set, | |
1193 | .parameter = (UINT64_C(1) << CAP_SYS_CHROOT), | |
1194 | }, | |
1195 | { | |
1196 | .id = "CapabilityBoundingSet=~CAP_BLOCK_SUSPEND", | |
3838d22c | 1197 | .json_field = "CapabilityBoundingSet_CAP_BLOCK_SUSPEND", |
ec16f3b6 LP |
1198 | .description_good = "Service cannot establish wake locks", |
1199 | .description_bad = "Service may establish wake locks", | |
1200 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1201 | .weight = 25, | |
1202 | .range = 1, | |
1203 | .assess = assess_capability_bounding_set, | |
1204 | .parameter = (UINT64_C(1) << CAP_BLOCK_SUSPEND), | |
1205 | }, | |
1206 | { | |
1207 | .id = "CapabilityBoundingSet=~CAP_WAKE_ALARM", | |
3838d22c | 1208 | .json_field = "CapabilityBoundingSet_CAP_WAKE_ALARM", |
ec16f3b6 LP |
1209 | .description_good = "Service cannot program timers that wake up the system", |
1210 | .description_bad = "Service may program timers that wake up the system", | |
1211 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1212 | .weight = 25, | |
1213 | .range = 1, | |
1214 | .assess = assess_capability_bounding_set, | |
1215 | .parameter = (UINT64_C(1) << CAP_WAKE_ALARM), | |
1216 | }, | |
1217 | { | |
1218 | .id = "CapabilityBoundingSet=~CAP_LEASE", | |
3838d22c | 1219 | .json_field = "CapabilityBoundingSet_CAP_LEASE", |
ec16f3b6 LP |
1220 | .description_good = "Service cannot create file leases", |
1221 | .description_bad = "Service may create file leases", | |
1222 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1223 | .weight = 25, | |
1224 | .range = 1, | |
1225 | .assess = assess_capability_bounding_set, | |
1226 | .parameter = (UINT64_C(1) << CAP_LEASE), | |
1227 | }, | |
1228 | { | |
1229 | .id = "CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG", | |
3838d22c | 1230 | .json_field = "CapabilityBoundingSet_CAP_SYS_TTY_CONFIG", |
ec16f3b6 LP |
1231 | .description_good = "Service cannot issue vhangup()", |
1232 | .description_bad = "Service may issue vhangup()", | |
1233 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1234 | .weight = 25, | |
1235 | .range = 1, | |
1236 | .assess = assess_capability_bounding_set, | |
1237 | .parameter = (UINT64_C(1) << CAP_SYS_TTY_CONFIG), | |
1238 | }, | |
1239 | { | |
1240 | .id = "CapabilityBoundingSet=~CAP_SYS_PACCT", | |
3838d22c | 1241 | .json_field = "CapabilityBoundingSet_CAP_SYS_PACCT", |
ec16f3b6 LP |
1242 | .description_good = "Service cannot use acct()", |
1243 | .description_bad = "Service may use acct()", | |
1244 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#CapabilityBoundingSet=", | |
1245 | .weight = 25, | |
1246 | .range = 1, | |
1247 | .assess = assess_capability_bounding_set, | |
1248 | .parameter = (UINT64_C(1) << CAP_SYS_PACCT), | |
1249 | }, | |
1250 | { | |
1251 | .id = "UMask=", | |
3838d22c | 1252 | .json_field = "UMask", |
ec16f3b6 LP |
1253 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#UMask=", |
1254 | .weight = 100, | |
1255 | .range = 10, | |
1256 | .assess = assess_umask, | |
1257 | }, | |
1258 | { | |
1259 | .id = "KeyringMode=", | |
3838d22c | 1260 | .json_field = "KeyringMode", |
ec16f3b6 LP |
1261 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#KeyringMode=", |
1262 | .description_good = "Service doesn't share key material with other services", | |
1263 | .description_bad = "Service shares key material with other service", | |
1264 | .weight = 1000, | |
1265 | .range = 1, | |
1266 | .assess = assess_keyring_mode, | |
1267 | }, | |
ed125c93 LP |
1268 | { |
1269 | .id = "ProtectProc=", | |
3838d22c | 1270 | .json_field = "ProtectProc", |
ed125c93 LP |
1271 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProtectProc=", |
1272 | .description_good = "Service has restricted access to process tree (/proc hidepid=)", | |
1273 | .description_bad = "Service has full access to process tree (/proc hidepid=)", | |
1274 | .weight = 1000, | |
1275 | .range = 3, | |
1276 | .assess = assess_protect_proc, | |
1277 | }, | |
1278 | { | |
1279 | .id = "ProcSubset=", | |
3838d22c | 1280 | .json_field = "ProcSubset", |
ed125c93 LP |
1281 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#ProcSubset=", |
1282 | .description_good = "Service has no access to non-process /proc files (/proc subset=)", | |
1283 | .description_bad = "Service has full access to non-process /proc files (/proc subset=)", | |
1284 | .weight = 10, | |
1285 | .range = 1, | |
1286 | .assess = assess_proc_subset, | |
1287 | }, | |
ec16f3b6 LP |
1288 | { |
1289 | .id = "NotifyAccess=", | |
3838d22c | 1290 | .json_field = "NotifyAccess", |
ec16f3b6 LP |
1291 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#NotifyAccess=", |
1292 | .description_good = "Service child processes cannot alter service state", | |
1293 | .description_bad = "Service child processes may alter service state", | |
1294 | .weight = 1000, | |
1295 | .range = 1, | |
1296 | .assess = assess_notify_access, | |
1297 | }, | |
1298 | { | |
1299 | .id = "RemoveIPC=", | |
3838d22c | 1300 | .json_field = "RemoveIPC", |
ec16f3b6 LP |
1301 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RemoveIPC=", |
1302 | .description_good = "Service user cannot leave SysV IPC objects around", | |
1303 | .description_bad = "Service user may leave SysV IPC objects around", | |
1304 | .description_na = "Service runs as root, option does not apply", | |
1305 | .weight = 100, | |
1306 | .range = 1, | |
1307 | .assess = assess_remove_ipc, | |
1624114d | 1308 | .offset = offsetof(SecurityInfo, remove_ipc), |
ec16f3b6 LP |
1309 | }, |
1310 | { | |
1311 | .id = "Delegate=", | |
3838d22c | 1312 | .json_field = "Delegate", |
ec16f3b6 LP |
1313 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#Delegate=", |
1314 | .description_good = "Service does not maintain its own delegated control group subtree", | |
1315 | .description_bad = "Service maintains its own delegated control group subtree", | |
1316 | .weight = 100, | |
1317 | .range = 1, | |
1318 | .assess = assess_bool, | |
1624114d | 1319 | .offset = offsetof(SecurityInfo, delegate), |
ec16f3b6 LP |
1320 | .parameter = true, /* invert! */ |
1321 | }, | |
1322 | { | |
1323 | .id = "RestrictRealtime=", | |
3838d22c | 1324 | .json_field = "RestrictRealtime", |
ec16f3b6 LP |
1325 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictRealtime=", |
1326 | .description_good = "Service realtime scheduling access is restricted", | |
1327 | .description_bad = "Service may acquire realtime scheduling", | |
1328 | .weight = 500, | |
1329 | .range = 1, | |
1330 | .assess = assess_bool, | |
1624114d | 1331 | .offset = offsetof(SecurityInfo, restrict_realtime), |
ec16f3b6 | 1332 | }, |
9d880b70 LP |
1333 | { |
1334 | .id = "RestrictSUIDSGID=", | |
3838d22c | 1335 | .json_field = "RestrictSUIDSGID", |
9d880b70 LP |
1336 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictSUIDSGID=", |
1337 | .description_good = "SUID/SGID file creation by service is restricted", | |
1338 | .description_bad = "Service may create SUID/SGID files", | |
1339 | .weight = 1000, | |
1340 | .range = 1, | |
1341 | .assess = assess_bool, | |
1624114d | 1342 | .offset = offsetof(SecurityInfo, restrict_suid_sgid), |
9d880b70 | 1343 | }, |
ec16f3b6 | 1344 | { |
c1e6f215 KL |
1345 | .id = "RestrictNamespaces=~user", |
1346 | .json_field = "RestrictNamespaces_user", | |
ec16f3b6 LP |
1347 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", |
1348 | .description_good = "Service cannot create user namespaces", | |
1349 | .description_bad = "Service may create user namespaces", | |
1350 | .weight = 1500, | |
1351 | .range = 1, | |
1352 | .assess = assess_restrict_namespaces, | |
1353 | .parameter = CLONE_NEWUSER, | |
1354 | }, | |
1355 | { | |
c1e6f215 KL |
1356 | .id = "RestrictNamespaces=~mnt", |
1357 | .json_field = "RestrictNamespaces_mnt", | |
ec16f3b6 LP |
1358 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", |
1359 | .description_good = "Service cannot create file system namespaces", | |
1360 | .description_bad = "Service may create file system namespaces", | |
1361 | .weight = 500, | |
1362 | .range = 1, | |
1363 | .assess = assess_restrict_namespaces, | |
1364 | .parameter = CLONE_NEWNS, | |
1365 | }, | |
1366 | { | |
c1e6f215 KL |
1367 | .id = "RestrictNamespaces=~ipc", |
1368 | .json_field = "RestrictNamespaces_ipc", | |
ec16f3b6 LP |
1369 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", |
1370 | .description_good = "Service cannot create IPC namespaces", | |
1371 | .description_bad = "Service may create IPC namespaces", | |
1372 | .weight = 500, | |
1373 | .range = 1, | |
1374 | .assess = assess_restrict_namespaces, | |
1375 | .parameter = CLONE_NEWIPC, | |
1376 | }, | |
1377 | { | |
c1e6f215 KL |
1378 | .id = "RestrictNamespaces=~pid", |
1379 | .json_field = "RestrictNamespaces_pid", | |
ec16f3b6 LP |
1380 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", |
1381 | .description_good = "Service cannot create process namespaces", | |
1382 | .description_bad = "Service may create process namespaces", | |
1383 | .weight = 500, | |
1384 | .range = 1, | |
1385 | .assess = assess_restrict_namespaces, | |
1386 | .parameter = CLONE_NEWPID, | |
1387 | }, | |
1388 | { | |
c1e6f215 KL |
1389 | .id = "RestrictNamespaces=~cgroup", |
1390 | .json_field = "RestrictNamespaces_cgroup", | |
ec16f3b6 LP |
1391 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", |
1392 | .description_good = "Service cannot create cgroup namespaces", | |
1393 | .description_bad = "Service may create cgroup namespaces", | |
1394 | .weight = 500, | |
1395 | .range = 1, | |
1396 | .assess = assess_restrict_namespaces, | |
1397 | .parameter = CLONE_NEWCGROUP, | |
1398 | }, | |
1399 | { | |
c1e6f215 KL |
1400 | .id = "RestrictNamespaces=~net", |
1401 | .json_field = "RestrictNamespaces_net", | |
ec16f3b6 LP |
1402 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", |
1403 | .description_good = "Service cannot create network namespaces", | |
1404 | .description_bad = "Service may create network namespaces", | |
1405 | .weight = 500, | |
1406 | .range = 1, | |
1407 | .assess = assess_restrict_namespaces, | |
1408 | .parameter = CLONE_NEWNET, | |
1409 | }, | |
1410 | { | |
c1e6f215 KL |
1411 | .id = "RestrictNamespaces=~uts", |
1412 | .json_field = "RestrictNamespaces_uts", | |
ec16f3b6 LP |
1413 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=", |
1414 | .description_good = "Service cannot create hostname namespaces", | |
1415 | .description_bad = "Service may create hostname namespaces", | |
1416 | .weight = 100, | |
1417 | .range = 1, | |
1418 | .assess = assess_restrict_namespaces, | |
1419 | .parameter = CLONE_NEWUTS, | |
1420 | }, | |
1421 | { | |
1422 | .id = "RestrictAddressFamilies=~AF_(INET|INET6)", | |
3838d22c | 1423 | .json_field = "RestrictAddressFamilies_AF_INET_INET6", |
ec16f3b6 LP |
1424 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", |
1425 | .description_good = "Service cannot allocate Internet sockets", | |
1426 | .description_bad = "Service may allocate Internet sockets", | |
1427 | .weight = 1500, | |
1428 | .range = 1, | |
1429 | .assess = assess_bool, | |
1624114d | 1430 | .offset = offsetof(SecurityInfo, restrict_address_family_inet), |
ec16f3b6 LP |
1431 | }, |
1432 | { | |
1433 | .id = "RestrictAddressFamilies=~AF_UNIX", | |
3838d22c | 1434 | .json_field = "RestrictAddressFamilies_AF_UNIX", |
ec16f3b6 LP |
1435 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", |
1436 | .description_good = "Service cannot allocate local sockets", | |
1437 | .description_bad = "Service may allocate local sockets", | |
1438 | .weight = 25, | |
1439 | .range = 1, | |
1440 | .assess = assess_bool, | |
1624114d | 1441 | .offset = offsetof(SecurityInfo, restrict_address_family_unix), |
ec16f3b6 LP |
1442 | }, |
1443 | { | |
1444 | .id = "RestrictAddressFamilies=~AF_NETLINK", | |
3838d22c | 1445 | .json_field = "RestrictAddressFamilies_AF_NETLINK", |
ec16f3b6 LP |
1446 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", |
1447 | .description_good = "Service cannot allocate netlink sockets", | |
1448 | .description_bad = "Service may allocate netlink sockets", | |
1449 | .weight = 200, | |
1450 | .range = 1, | |
1451 | .assess = assess_bool, | |
1624114d | 1452 | .offset = offsetof(SecurityInfo, restrict_address_family_netlink), |
ec16f3b6 LP |
1453 | }, |
1454 | { | |
1455 | .id = "RestrictAddressFamilies=~AF_PACKET", | |
3838d22c | 1456 | .json_field = "RestrictAddressFamilies_AF_PACKET", |
ec16f3b6 LP |
1457 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", |
1458 | .description_good = "Service cannot allocate packet sockets", | |
1459 | .description_bad = "Service may allocate packet sockets", | |
1460 | .weight = 1000, | |
1461 | .range = 1, | |
1462 | .assess = assess_bool, | |
1624114d | 1463 | .offset = offsetof(SecurityInfo, restrict_address_family_packet), |
ec16f3b6 LP |
1464 | }, |
1465 | { | |
1466 | .id = "RestrictAddressFamilies=~…", | |
3838d22c | 1467 | .json_field = "RestrictAddressFamilies_OTHER", |
ec16f3b6 LP |
1468 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictAddressFamilies=", |
1469 | .description_good = "Service cannot allocate exotic sockets", | |
1470 | .description_bad = "Service may allocate exotic sockets", | |
1471 | .weight = 1250, | |
1472 | .range = 1, | |
1473 | .assess = assess_bool, | |
1624114d | 1474 | .offset = offsetof(SecurityInfo, restrict_address_family_other), |
ec16f3b6 LP |
1475 | }, |
1476 | { | |
1477 | .id = "SystemCallArchitectures=", | |
3838d22c | 1478 | .json_field = "SystemCallArchitectures", |
ec16f3b6 LP |
1479 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallArchitectures=", |
1480 | .weight = 1000, | |
1481 | .range = 10, | |
1482 | .assess = assess_system_call_architectures, | |
1483 | }, | |
3a5d89fa | 1484 | #if HAVE_SECCOMP |
ec16f3b6 LP |
1485 | { |
1486 | .id = "SystemCallFilter=~@swap", | |
3838d22c | 1487 | .json_field = "SystemCallFilter_swap", |
ec16f3b6 LP |
1488 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1489 | .weight = 1000, | |
1490 | .range = 10, | |
1491 | .assess = assess_system_call_filter, | |
1492 | .parameter = SYSCALL_FILTER_SET_SWAP, | |
1493 | }, | |
1494 | { | |
1495 | .id = "SystemCallFilter=~@obsolete", | |
3838d22c | 1496 | .json_field = "SystemCallFilter_obsolete", |
ec16f3b6 LP |
1497 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1498 | .weight = 250, | |
1499 | .range = 10, | |
1500 | .assess = assess_system_call_filter, | |
1501 | .parameter = SYSCALL_FILTER_SET_OBSOLETE, | |
1502 | }, | |
1503 | { | |
1504 | .id = "SystemCallFilter=~@clock", | |
3838d22c | 1505 | .json_field = "SystemCallFilter_clock", |
ec16f3b6 LP |
1506 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1507 | .weight = 1000, | |
1508 | .range = 10, | |
1509 | .assess = assess_system_call_filter, | |
1510 | .parameter = SYSCALL_FILTER_SET_CLOCK, | |
1511 | }, | |
1512 | { | |
1513 | .id = "SystemCallFilter=~@cpu-emulation", | |
3838d22c | 1514 | .json_field = "SystemCallFilter_cpu_emulation", |
ec16f3b6 LP |
1515 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1516 | .weight = 250, | |
1517 | .range = 10, | |
1518 | .assess = assess_system_call_filter, | |
1519 | .parameter = SYSCALL_FILTER_SET_CPU_EMULATION, | |
1520 | }, | |
1521 | { | |
1522 | .id = "SystemCallFilter=~@debug", | |
3838d22c | 1523 | .json_field = "SystemCallFilter_debug", |
ec16f3b6 LP |
1524 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1525 | .weight = 1000, | |
1526 | .range = 10, | |
1527 | .assess = assess_system_call_filter, | |
1528 | .parameter = SYSCALL_FILTER_SET_DEBUG, | |
1529 | }, | |
1530 | { | |
1531 | .id = "SystemCallFilter=~@mount", | |
3838d22c | 1532 | .json_field = "SystemCallFilter_mount", |
ec16f3b6 LP |
1533 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1534 | .weight = 1000, | |
1535 | .range = 10, | |
1536 | .assess = assess_system_call_filter, | |
1537 | .parameter = SYSCALL_FILTER_SET_MOUNT, | |
1538 | }, | |
1539 | { | |
1540 | .id = "SystemCallFilter=~@module", | |
3838d22c | 1541 | .json_field = "SystemCallFilter_module", |
ec16f3b6 LP |
1542 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1543 | .weight = 1000, | |
1544 | .range = 10, | |
1545 | .assess = assess_system_call_filter, | |
1546 | .parameter = SYSCALL_FILTER_SET_MODULE, | |
1547 | }, | |
1548 | { | |
1549 | .id = "SystemCallFilter=~@raw-io", | |
3838d22c | 1550 | .json_field = "SystemCallFilter_raw_io", |
ec16f3b6 LP |
1551 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1552 | .weight = 1000, | |
1553 | .range = 10, | |
1554 | .assess = assess_system_call_filter, | |
1555 | .parameter = SYSCALL_FILTER_SET_RAW_IO, | |
1556 | }, | |
1557 | { | |
1558 | .id = "SystemCallFilter=~@reboot", | |
3838d22c | 1559 | .json_field = "SystemCallFilter_reboot", |
ec16f3b6 LP |
1560 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1561 | .weight = 1000, | |
1562 | .range = 10, | |
1563 | .assess = assess_system_call_filter, | |
1564 | .parameter = SYSCALL_FILTER_SET_REBOOT, | |
1565 | }, | |
1566 | { | |
1567 | .id = "SystemCallFilter=~@privileged", | |
3838d22c | 1568 | .json_field = "SystemCallFilter_privileged", |
ec16f3b6 LP |
1569 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1570 | .weight = 700, | |
1571 | .range = 10, | |
1572 | .assess = assess_system_call_filter, | |
1573 | .parameter = SYSCALL_FILTER_SET_PRIVILEGED, | |
1574 | }, | |
1575 | { | |
1576 | .id = "SystemCallFilter=~@resources", | |
3838d22c | 1577 | .json_field = "SystemCallFilter_resources", |
ec16f3b6 LP |
1578 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=", |
1579 | .weight = 700, | |
1580 | .range = 10, | |
1581 | .assess = assess_system_call_filter, | |
1582 | .parameter = SYSCALL_FILTER_SET_RESOURCES, | |
1583 | }, | |
3a5d89fa | 1584 | #endif |
ec16f3b6 LP |
1585 | { |
1586 | .id = "IPAddressDeny=", | |
3838d22c | 1587 | .json_field = "IPAddressDeny", |
ec16f3b6 LP |
1588 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#IPAddressDeny=", |
1589 | .weight = 1000, | |
1590 | .range = 10, | |
1591 | .assess = assess_ip_address_allow, | |
1592 | }, | |
1593 | { | |
1594 | .id = "DeviceAllow=", | |
3838d22c | 1595 | .json_field = "DeviceAllow", |
ec16f3b6 LP |
1596 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#DeviceAllow=", |
1597 | .weight = 1000, | |
1598 | .range = 10, | |
1599 | .assess = assess_device_allow, | |
1600 | }, | |
1601 | { | |
1602 | .id = "AmbientCapabilities=", | |
3838d22c | 1603 | .json_field = "AmbientCapabilities", |
ec16f3b6 LP |
1604 | .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#AmbientCapabilities=", |
1605 | .description_good = "Service process does not receive ambient capabilities", | |
1606 | .description_bad = "Service process receives ambient capabilities", | |
1607 | .weight = 500, | |
1608 | .range = 1, | |
1609 | .assess = assess_ambient_capabilities, | |
1610 | }, | |
1611 | }; | |
1612 | ||
3838d22c MG |
1613 | static JsonVariant* security_assessor_find_in_policy(const struct security_assessor *a, JsonVariant *policy, const char *name) { |
1614 | JsonVariant *item; | |
1615 | assert(a); | |
1616 | ||
1617 | if (!policy) | |
1618 | return NULL; | |
1619 | if (!json_variant_is_object(policy)) { | |
05403363 | 1620 | log_debug("Specified policy is not a JSON object, ignoring."); |
3838d22c MG |
1621 | return NULL; |
1622 | } | |
1623 | ||
1624 | item = json_variant_by_key(policy, a->json_field); | |
1625 | if (!item) | |
1626 | return NULL; | |
1627 | if (!json_variant_is_object(item)) { | |
1628 | log_debug("Item for '%s' in policy JSON object is not an object, ignoring.", a->id); | |
1629 | return NULL; | |
1630 | } | |
1631 | ||
1632 | return name ? json_variant_by_key(item, name) : item; | |
1633 | } | |
1634 | ||
1635 | static uint64_t access_weight(const struct security_assessor *a, JsonVariant *policy) { | |
1636 | JsonVariant *val; | |
1637 | ||
1638 | assert(a); | |
1639 | ||
1640 | val = security_assessor_find_in_policy(a, policy, "weight"); | |
1641 | if (val) { | |
1642 | if (json_variant_is_unsigned(val)) | |
1643 | return json_variant_unsigned(val); | |
1644 | log_debug("JSON field 'weight' of policy for %s is not an unsigned integer, ignoring.", a->id); | |
1645 | } | |
1646 | ||
1647 | return a->weight; | |
1648 | } | |
1649 | ||
1650 | static uint64_t access_range(const struct security_assessor *a, JsonVariant *policy) { | |
1651 | JsonVariant *val; | |
1652 | ||
1653 | assert(a); | |
1654 | ||
1655 | val = security_assessor_find_in_policy(a, policy, "range"); | |
1656 | if (val) { | |
1657 | if (json_variant_is_unsigned(val)) | |
1658 | return json_variant_unsigned(val); | |
1659 | log_debug("JSON field 'range' of policy for %s is not an unsigned integer, ignoring.", a->id); | |
1660 | } | |
1661 | ||
1662 | return a->range; | |
1663 | } | |
1664 | ||
1665 | static const char *access_description_na(const struct security_assessor *a, JsonVariant *policy) { | |
1666 | JsonVariant *val; | |
1667 | ||
1668 | assert(a); | |
1669 | ||
1670 | val = security_assessor_find_in_policy(a, policy, "description_na"); | |
1671 | if (val) { | |
1672 | if (json_variant_is_string(val)) | |
1673 | return json_variant_string(val); | |
1674 | log_debug("JSON field 'description_na' of policy for %s is not a string, ignoring.", a->id); | |
1675 | } | |
1676 | ||
1677 | return a->description_na; | |
1678 | } | |
1679 | ||
1680 | static const char *access_description_good(const struct security_assessor *a, JsonVariant *policy) { | |
1681 | JsonVariant *val; | |
1682 | ||
1683 | assert(a); | |
1684 | ||
1685 | val = security_assessor_find_in_policy(a, policy, "description_good"); | |
1686 | if (val) { | |
1687 | if (json_variant_is_string(val)) | |
1688 | return json_variant_string(val); | |
1689 | log_debug("JSON field 'description_good' of policy for %s is not a string, ignoring.", a->id); | |
1690 | } | |
1691 | ||
1692 | return a->description_good; | |
1693 | } | |
1694 | ||
1695 | static const char *access_description_bad(const struct security_assessor *a, JsonVariant *policy) { | |
1696 | JsonVariant *val; | |
1697 | ||
1698 | assert(a); | |
1699 | ||
1700 | val = security_assessor_find_in_policy(a, policy, "description_bad"); | |
1701 | if (val) { | |
1702 | if (json_variant_is_string(val)) | |
1703 | return json_variant_string(val); | |
1704 | log_debug("JSON field 'description_bad' of policy for %s is not a string, ignoring.", a->id); | |
1705 | } | |
1706 | ||
1707 | return a->description_bad; | |
1708 | } | |
1709 | ||
1710 | static int assess(const SecurityInfo *info, | |
1711 | Table *overview_table, | |
1712 | AnalyzeSecurityFlags flags, | |
1713 | unsigned threshold, | |
4b4a8ef7 MG |
1714 | JsonVariant *policy, |
1715 | PagerFlags pager_flags, | |
1716 | JsonFormatFlags json_format_flags) { | |
3838d22c | 1717 | |
ec16f3b6 LP |
1718 | static const struct { |
1719 | uint64_t exposure; | |
1720 | const char *name; | |
1721 | const char *color; | |
1722 | SpecialGlyph smiley; | |
1723 | } badness_table[] = { | |
9a6f746f LP |
1724 | { 100, "DANGEROUS", ANSI_HIGHLIGHT_RED, SPECIAL_GLYPH_DEPRESSED_SMILEY }, |
1725 | { 90, "UNSAFE", ANSI_HIGHLIGHT_RED, SPECIAL_GLYPH_UNHAPPY_SMILEY }, | |
1726 | { 75, "EXPOSED", ANSI_HIGHLIGHT_YELLOW, SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY }, | |
1727 | { 50, "MEDIUM", NULL, SPECIAL_GLYPH_NEUTRAL_SMILEY }, | |
1728 | { 10, "OK", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_SLIGHTLY_HAPPY_SMILEY }, | |
1729 | { 1, "SAFE", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_HAPPY_SMILEY }, | |
1730 | { 0, "PERFECT", ANSI_HIGHLIGHT_GREEN, SPECIAL_GLYPH_ECSTATIC_SMILEY }, | |
ec16f3b6 LP |
1731 | }; |
1732 | ||
1733 | uint64_t badness_sum = 0, weight_sum = 0, exposure; | |
1734 | _cleanup_(table_unrefp) Table *details_table = NULL; | |
1735 | size_t i; | |
1736 | int r; | |
1737 | ||
1738 | if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT)) { | |
4b4a8ef7 | 1739 | details_table = table_new(" ", "name", "json_field", "description", "weight", "badness", "range", "exposure"); |
ec16f3b6 LP |
1740 | if (!details_table) |
1741 | return log_oom(); | |
1742 | ||
4b4a8ef7 MG |
1743 | r = table_set_json_field_name(details_table, 0, "set"); |
1744 | if (r < 0) | |
1745 | return log_error_errno(r, "Failed to set JSON field name of column 0: %m"); | |
1746 | ||
ef1e0b9a | 1747 | (void) table_set_sort(details_table, (size_t) 3, (size_t) 1); |
ec16f3b6 LP |
1748 | (void) table_set_reverse(details_table, 3, true); |
1749 | ||
1750 | if (getenv_bool("SYSTEMD_ANALYZE_DEBUG") <= 0) | |
4b4a8ef7 | 1751 | (void) table_set_display(details_table, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 7); |
ec16f3b6 LP |
1752 | } |
1753 | ||
1754 | for (i = 0; i < ELEMENTSOF(security_assessor_table); i++) { | |
1755 | const struct security_assessor *a = security_assessor_table + i; | |
1756 | _cleanup_free_ char *d = NULL; | |
1757 | uint64_t badness; | |
1758 | void *data; | |
3838d22c MG |
1759 | uint64_t weight = access_weight(a, policy); |
1760 | uint64_t range = access_range(a, policy); | |
ec16f3b6 | 1761 | |
1ace223c | 1762 | data = (uint8_t *) info + a->offset; |
ec16f3b6 LP |
1763 | |
1764 | if (a->default_dependencies_only && !info->default_dependencies) { | |
1765 | badness = UINT64_MAX; | |
77552b95 | 1766 | d = strdup("Service runs in special boot phase, option is not appropriate"); |
ec16f3b6 | 1767 | if (!d) |
82100ef4 LB |
1768 | return log_oom(); |
1769 | } else if (weight == 0) { | |
1770 | badness = UINT64_MAX; | |
1771 | d = strdup("Option excluded by policy, skipping"); | |
1772 | if (!d) | |
ec16f3b6 LP |
1773 | return log_oom(); |
1774 | } else { | |
1775 | r = a->assess(a, info, data, &badness, &d); | |
1776 | if (r < 0) | |
1777 | return r; | |
1778 | } | |
1779 | ||
3838d22c | 1780 | assert(range > 0); |
ec16f3b6 LP |
1781 | |
1782 | if (badness != UINT64_MAX) { | |
3838d22c | 1783 | assert(badness <= range); |
ec16f3b6 | 1784 | |
3838d22c MG |
1785 | badness_sum += DIV_ROUND_UP(badness * weight, range); |
1786 | weight_sum += weight; | |
ec16f3b6 LP |
1787 | } |
1788 | ||
1789 | if (details_table) { | |
4b4a8ef7 MG |
1790 | const char *description, *color = NULL; |
1791 | int checkmark; | |
ec16f3b6 LP |
1792 | |
1793 | if (badness == UINT64_MAX) { | |
4b4a8ef7 | 1794 | checkmark = -1; |
3838d22c | 1795 | description = access_description_na(a, policy); |
ec16f3b6 LP |
1796 | color = NULL; |
1797 | } else if (badness == a->range) { | |
4b4a8ef7 | 1798 | checkmark = 0; |
3838d22c | 1799 | description = access_description_bad(a, policy); |
ec16f3b6 LP |
1800 | color = ansi_highlight_red(); |
1801 | } else if (badness == 0) { | |
4b4a8ef7 | 1802 | checkmark = 1; |
3838d22c | 1803 | description = access_description_good(a, policy); |
ec16f3b6 LP |
1804 | color = ansi_highlight_green(); |
1805 | } else { | |
4b4a8ef7 | 1806 | checkmark = 0; |
ec16f3b6 LP |
1807 | description = NULL; |
1808 | color = ansi_highlight_red(); | |
1809 | } | |
1810 | ||
1811 | if (d) | |
1812 | description = d; | |
1813 | ||
4b4a8ef7 MG |
1814 | if (checkmark < 0) { |
1815 | r = table_add_many(details_table, TABLE_EMPTY); | |
1816 | if (r < 0) | |
1817 | return table_log_add_error(r); | |
1818 | } else { | |
1819 | r = table_add_many(details_table, | |
1820 | TABLE_BOOLEAN_CHECKMARK, checkmark > 0, | |
1821 | TABLE_SET_MINIMUM_WIDTH, 1, | |
1822 | TABLE_SET_MAXIMUM_WIDTH, 1, | |
1823 | TABLE_SET_ELLIPSIZE_PERCENT, 0, | |
1824 | TABLE_SET_COLOR, color); | |
1825 | if (r < 0) | |
1826 | return table_log_add_error(r); | |
1827 | } | |
3838d22c | 1828 | |
2cb434cf | 1829 | r = table_add_many(details_table, |
4b4a8ef7 MG |
1830 | TABLE_STRING, a->id, TABLE_SET_URL, a->url, |
1831 | TABLE_STRING, a->json_field, | |
2cb434cf | 1832 | TABLE_STRING, description, |
3838d22c | 1833 | TABLE_UINT64, weight, TABLE_SET_ALIGN_PERCENT, 100, |
2cb434cf | 1834 | TABLE_UINT64, badness, TABLE_SET_ALIGN_PERCENT, 100, |
3838d22c | 1835 | TABLE_UINT64, range, TABLE_SET_ALIGN_PERCENT, 100, |
2cb434cf | 1836 | TABLE_EMPTY, TABLE_SET_ALIGN_PERCENT, 100); |
ec16f3b6 | 1837 | if (r < 0) |
9c46b437 | 1838 | return table_log_add_error(r); |
ec16f3b6 LP |
1839 | } |
1840 | } | |
1841 | ||
28a06f5a JS |
1842 | assert(weight_sum > 0); |
1843 | ||
ec16f3b6 LP |
1844 | if (details_table) { |
1845 | size_t row; | |
1846 | ||
1847 | for (row = 1; row < table_get_rows(details_table); row++) { | |
1848 | char buf[DECIMAL_STR_MAX(uint64_t) + 1 + DECIMAL_STR_MAX(uint64_t) + 1]; | |
1849 | const uint64_t *weight, *badness, *range; | |
1850 | TableCell *cell; | |
1851 | uint64_t x; | |
1852 | ||
4b4a8ef7 MG |
1853 | assert_se(weight = table_get_at(details_table, row, 4)); |
1854 | assert_se(badness = table_get_at(details_table, row, 5)); | |
1855 | assert_se(range = table_get_at(details_table, row, 6)); | |
ec16f3b6 LP |
1856 | |
1857 | if (*badness == UINT64_MAX || *badness == 0) | |
1858 | continue; | |
1859 | ||
4b4a8ef7 | 1860 | assert_se(cell = table_get_cell(details_table, row, 7)); |
ec16f3b6 LP |
1861 | |
1862 | x = DIV_ROUND_UP(DIV_ROUND_UP(*badness * *weight * 100U, *range), weight_sum); | |
1863 | xsprintf(buf, "%" PRIu64 ".%" PRIu64, x / 10, x % 10); | |
1864 | ||
1865 | r = table_update(details_table, cell, TABLE_STRING, buf); | |
1866 | if (r < 0) | |
1867 | return log_error_errno(r, "Failed to update cell in table: %m"); | |
1868 | } | |
1869 | ||
4b4a8ef7 MG |
1870 | if (json_format_flags & JSON_FORMAT_OFF) { |
1871 | r = table_hide_column_from_display(details_table, (size_t) 2); | |
1872 | if (r < 0) | |
1873 | return log_error_errno(r, "Failed to set columns to display: %m"); | |
1874 | } | |
1875 | ||
1876 | r = table_print_with_pager(details_table, json_format_flags, pager_flags, /* show_header= */true); | |
ec16f3b6 LP |
1877 | if (r < 0) |
1878 | return log_error_errno(r, "Failed to output table: %m"); | |
1879 | } | |
1880 | ||
1881 | exposure = DIV_ROUND_UP(badness_sum * 100U, weight_sum); | |
1882 | ||
1883 | for (i = 0; i < ELEMENTSOF(badness_table); i++) | |
1884 | if (exposure >= badness_table[i].exposure) | |
1885 | break; | |
1886 | ||
1887 | assert(i < ELEMENTSOF(badness_table)); | |
1888 | ||
4b4a8ef7 | 1889 | if (details_table && (json_format_flags & JSON_FORMAT_OFF)) { |
ec16f3b6 LP |
1890 | _cleanup_free_ char *clickable = NULL; |
1891 | const char *name; | |
1892 | ||
1893 | /* If we shall output the details table, also print the brief summary underneath */ | |
1894 | ||
1895 | if (info->fragment_path) { | |
1896 | r = terminal_urlify_path(info->fragment_path, info->id, &clickable); | |
1897 | if (r < 0) | |
1898 | return log_oom(); | |
1899 | ||
1900 | name = clickable; | |
1901 | } else | |
1902 | name = info->id; | |
1903 | ||
1904 | printf("\n%s %sOverall exposure level for %s%s: %s%" PRIu64 ".%" PRIu64 " %s%s %s\n", | |
9a6f746f | 1905 | special_glyph(SPECIAL_GLYPH_ARROW), |
ec16f3b6 LP |
1906 | ansi_highlight(), |
1907 | name, | |
1908 | ansi_normal(), | |
1909 | colors_enabled() ? strempty(badness_table[i].color) : "", | |
1910 | exposure / 10, exposure % 10, | |
1911 | badness_table[i].name, | |
1912 | ansi_normal(), | |
1913 | special_glyph(badness_table[i].smiley)); | |
1914 | } | |
1915 | ||
1916 | fflush(stdout); | |
1917 | ||
1918 | if (overview_table) { | |
1919 | char buf[DECIMAL_STR_MAX(uint64_t) + 1 + DECIMAL_STR_MAX(uint64_t) + 1]; | |
9c46b437 | 1920 | _cleanup_free_ char *url = NULL; |
ec16f3b6 | 1921 | |
ec16f3b6 | 1922 | if (info->fragment_path) { |
ec16f3b6 LP |
1923 | r = file_url_from_path(info->fragment_path, &url); |
1924 | if (r < 0) | |
1925 | return log_error_errno(r, "Failed to generate URL from path: %m"); | |
ec16f3b6 LP |
1926 | } |
1927 | ||
1928 | xsprintf(buf, "%" PRIu64 ".%" PRIu64, exposure / 10, exposure % 10); | |
ec16f3b6 | 1929 | |
9c46b437 YW |
1930 | r = table_add_many(overview_table, |
1931 | TABLE_STRING, info->id, | |
1932 | TABLE_SET_URL, url, | |
1933 | TABLE_STRING, buf, | |
1934 | TABLE_SET_ALIGN_PERCENT, 100, | |
1935 | TABLE_STRING, badness_table[i].name, | |
1936 | TABLE_SET_COLOR, strempty(badness_table[i].color), | |
1937 | TABLE_STRING, special_glyph(badness_table[i].smiley)); | |
ec16f3b6 | 1938 | if (r < 0) |
9c46b437 | 1939 | return table_log_add_error(r); |
ec16f3b6 LP |
1940 | } |
1941 | ||
dfbda879 MG |
1942 | /* Return error when overall exposure level is over threshold */ |
1943 | if (exposure > threshold) | |
1944 | return -EINVAL; | |
1945 | ||
ec16f3b6 LP |
1946 | return 0; |
1947 | } | |
1948 | ||
1624114d MG |
1949 | static int property_read_restrict_namespaces( |
1950 | sd_bus *bus, | |
1951 | const char *member, | |
1952 | sd_bus_message *m, | |
1953 | sd_bus_error *error, | |
1954 | void *userdata) { | |
1955 | ||
1956 | SecurityInfo *info = userdata; | |
1957 | int r; | |
1958 | uint64_t namespaces; | |
1959 | ||
1960 | assert(bus); | |
1961 | assert(member); | |
1962 | assert(m); | |
1963 | assert(info); | |
1964 | ||
1965 | r = sd_bus_message_read(m, "t", &namespaces); | |
1966 | if (r < 0) | |
1967 | return r; | |
1968 | ||
1969 | info->restrict_namespaces = (unsigned long long) namespaces; | |
1970 | ||
1971 | return 0; | |
1972 | } | |
1973 | ||
1974 | static int property_read_umask( | |
1975 | sd_bus *bus, | |
1976 | const char *member, | |
1977 | sd_bus_message *m, | |
1978 | sd_bus_error *error, | |
1979 | void *userdata) { | |
1980 | ||
1981 | SecurityInfo *info = userdata; | |
1982 | int r; | |
1983 | uint32_t umask; | |
1984 | ||
1985 | assert(bus); | |
1986 | assert(member); | |
1987 | assert(m); | |
1988 | assert(info); | |
1989 | ||
1990 | r = sd_bus_message_read(m, "u", &umask); | |
1991 | if (r < 0) | |
1992 | return r; | |
1993 | ||
1994 | info->_umask = (mode_t) umask; | |
1995 | ||
1996 | return 0; | |
1997 | } | |
1998 | ||
ec16f3b6 LP |
1999 | static int property_read_restrict_address_families( |
2000 | sd_bus *bus, | |
2001 | const char *member, | |
2002 | sd_bus_message *m, | |
2003 | sd_bus_error *error, | |
2004 | void *userdata) { | |
2005 | ||
1624114d | 2006 | SecurityInfo *info = userdata; |
6b000af4 | 2007 | int allow_list, r; |
ec16f3b6 LP |
2008 | |
2009 | assert(bus); | |
2010 | assert(member); | |
2011 | assert(m); | |
2012 | ||
2013 | r = sd_bus_message_enter_container(m, 'r', "bas"); | |
2014 | if (r < 0) | |
2015 | return r; | |
2016 | ||
6b000af4 | 2017 | r = sd_bus_message_read(m, "b", &allow_list); |
ec16f3b6 LP |
2018 | if (r < 0) |
2019 | return r; | |
2020 | ||
2021 | info->restrict_address_family_inet = | |
2022 | info->restrict_address_family_unix = | |
2023 | info->restrict_address_family_netlink = | |
2024 | info->restrict_address_family_packet = | |
6b000af4 | 2025 | info->restrict_address_family_other = allow_list; |
ec16f3b6 LP |
2026 | |
2027 | r = sd_bus_message_enter_container(m, 'a', "s"); | |
2028 | if (r < 0) | |
2029 | return r; | |
2030 | ||
2031 | for (;;) { | |
2032 | const char *name; | |
2033 | ||
2034 | r = sd_bus_message_read(m, "s", &name); | |
2035 | if (r < 0) | |
2036 | return r; | |
2037 | if (r == 0) | |
2038 | break; | |
2039 | ||
2040 | if (STR_IN_SET(name, "AF_INET", "AF_INET6")) | |
6b000af4 | 2041 | info->restrict_address_family_inet = !allow_list; |
ec16f3b6 | 2042 | else if (streq(name, "AF_UNIX")) |
6b000af4 | 2043 | info->restrict_address_family_unix = !allow_list; |
ec16f3b6 | 2044 | else if (streq(name, "AF_NETLINK")) |
6b000af4 | 2045 | info->restrict_address_family_netlink = !allow_list; |
ec16f3b6 | 2046 | else if (streq(name, "AF_PACKET")) |
6b000af4 | 2047 | info->restrict_address_family_packet = !allow_list; |
ec16f3b6 | 2048 | else |
6b000af4 | 2049 | info->restrict_address_family_other = !allow_list; |
ec16f3b6 LP |
2050 | } |
2051 | ||
2052 | r = sd_bus_message_exit_container(m); | |
2053 | if (r < 0) | |
2054 | return r; | |
2055 | ||
2056 | return sd_bus_message_exit_container(m); | |
2057 | } | |
2058 | ||
1624114d MG |
2059 | static int property_read_syscall_archs( |
2060 | sd_bus *bus, | |
2061 | const char *member, | |
2062 | sd_bus_message *m, | |
2063 | sd_bus_error *error, | |
2064 | void *userdata) { | |
2065 | ||
2066 | SecurityInfo *info = userdata; | |
2067 | int r; | |
2068 | ||
2069 | assert(bus); | |
2070 | assert(member); | |
2071 | assert(m); | |
2072 | assert(info); | |
2073 | ||
2074 | r = sd_bus_message_enter_container(m, 'a', "s"); | |
2075 | if (r < 0) | |
2076 | return r; | |
2077 | ||
2078 | for (;;) { | |
2079 | const char *name; | |
2080 | ||
2081 | r = sd_bus_message_read(m, "s", &name); | |
2082 | if (r < 0) | |
2083 | return r; | |
2084 | if (r == 0) | |
2085 | break; | |
2086 | ||
2087 | r = set_put_strdup(&info->system_call_architectures, name); | |
2088 | if (r < 0) | |
2089 | return r; | |
2090 | } | |
2091 | ||
2092 | return sd_bus_message_exit_container(m); | |
2093 | } | |
2094 | ||
ec16f3b6 LP |
2095 | static int property_read_system_call_filter( |
2096 | sd_bus *bus, | |
2097 | const char *member, | |
2098 | sd_bus_message *m, | |
2099 | sd_bus_error *error, | |
2100 | void *userdata) { | |
2101 | ||
1624114d | 2102 | SecurityInfo *info = userdata; |
6b000af4 | 2103 | int allow_list, r; |
ec16f3b6 LP |
2104 | |
2105 | assert(bus); | |
2106 | assert(member); | |
2107 | assert(m); | |
2108 | ||
2109 | r = sd_bus_message_enter_container(m, 'r', "bas"); | |
2110 | if (r < 0) | |
2111 | return r; | |
2112 | ||
6b000af4 | 2113 | r = sd_bus_message_read(m, "b", &allow_list); |
ec16f3b6 LP |
2114 | if (r < 0) |
2115 | return r; | |
2116 | ||
6b000af4 | 2117 | info->system_call_filter_allow_list = allow_list; |
ec16f3b6 LP |
2118 | |
2119 | r = sd_bus_message_enter_container(m, 'a', "s"); | |
2120 | if (r < 0) | |
2121 | return r; | |
2122 | ||
2123 | for (;;) { | |
2124 | const char *name; | |
2125 | ||
2126 | r = sd_bus_message_read(m, "s", &name); | |
2127 | if (r < 0) | |
2128 | return r; | |
2129 | if (r == 0) | |
2130 | break; | |
2131 | ||
1624114d MG |
2132 | /* The actual ExecContext stores the system call id as the map value, which we don't |
2133 | * need. So we assign NULL to all values here. */ | |
2134 | r = hashmap_put_strdup(&info->system_call_filter, name, NULL); | |
ec16f3b6 LP |
2135 | if (r < 0) |
2136 | return r; | |
2137 | } | |
2138 | ||
2139 | r = sd_bus_message_exit_container(m); | |
2140 | if (r < 0) | |
2141 | return r; | |
2142 | ||
2143 | return sd_bus_message_exit_container(m); | |
2144 | } | |
2145 | ||
2146 | static int property_read_ip_address_allow( | |
2147 | sd_bus *bus, | |
2148 | const char *member, | |
2149 | sd_bus_message *m, | |
2150 | sd_bus_error *error, | |
2151 | void *userdata) { | |
2152 | ||
1624114d | 2153 | SecurityInfo *info = userdata; |
ec16f3b6 LP |
2154 | bool deny_ipv4 = false, deny_ipv6 = false; |
2155 | int r; | |
2156 | ||
2157 | assert(bus); | |
2158 | assert(member); | |
2159 | assert(m); | |
2160 | ||
2161 | r = sd_bus_message_enter_container(m, 'a', "(iayu)"); | |
2162 | if (r < 0) | |
2163 | return r; | |
2164 | ||
2165 | for (;;) { | |
2166 | const void *data; | |
2167 | size_t size; | |
2168 | int32_t family; | |
2169 | uint32_t prefixlen; | |
2170 | ||
2171 | r = sd_bus_message_enter_container(m, 'r', "iayu"); | |
2172 | if (r < 0) | |
2173 | return r; | |
2174 | if (r == 0) | |
2175 | break; | |
2176 | ||
2177 | r = sd_bus_message_read(m, "i", &family); | |
2178 | if (r < 0) | |
2179 | return r; | |
2180 | ||
2181 | r = sd_bus_message_read_array(m, 'y', &data, &size); | |
2182 | if (r < 0) | |
2183 | return r; | |
2184 | ||
2185 | r = sd_bus_message_read(m, "u", &prefixlen); | |
2186 | if (r < 0) | |
2187 | return r; | |
2188 | ||
2189 | r = sd_bus_message_exit_container(m); | |
2190 | if (r < 0) | |
2191 | return r; | |
2192 | ||
2193 | if (streq(member, "IPAddressAllow")) { | |
2194 | union in_addr_union u; | |
2195 | ||
2196 | if (family == AF_INET && size == 4 && prefixlen == 8) | |
2197 | memcpy(&u.in, data, size); | |
2198 | else if (family == AF_INET6 && size == 16 && prefixlen == 128) | |
2199 | memcpy(&u.in6, data, size); | |
2200 | else { | |
2201 | info->ip_address_allow_other = true; | |
2202 | continue; | |
2203 | } | |
2204 | ||
2205 | if (in_addr_is_localhost(family, &u)) | |
2206 | info->ip_address_allow_localhost = true; | |
2207 | else | |
2208 | info->ip_address_allow_other = true; | |
2209 | } else { | |
2210 | assert(streq(member, "IPAddressDeny")); | |
2211 | ||
2212 | if (family == AF_INET && size == 4 && prefixlen == 0) | |
2213 | deny_ipv4 = true; | |
2214 | else if (family == AF_INET6 && size == 16 && prefixlen == 0) | |
2215 | deny_ipv6 = true; | |
2216 | } | |
2217 | } | |
2218 | ||
2219 | info->ip_address_deny_all = deny_ipv4 && deny_ipv6; | |
2220 | ||
2221 | return sd_bus_message_exit_container(m); | |
2222 | } | |
2223 | ||
fab34748 KL |
2224 | static int property_read_ip_filters( |
2225 | sd_bus *bus, | |
2226 | const char *member, | |
2227 | sd_bus_message *m, | |
2228 | sd_bus_error *error, | |
2229 | void *userdata) { | |
2230 | ||
1624114d | 2231 | SecurityInfo *info = userdata; |
fab34748 KL |
2232 | _cleanup_(strv_freep) char **l = NULL; |
2233 | int r; | |
2234 | ||
2235 | assert(bus); | |
2236 | assert(member); | |
2237 | assert(m); | |
2238 | ||
2239 | r = sd_bus_message_read_strv(m, &l); | |
2240 | if (r < 0) | |
2241 | return r; | |
2242 | ||
2243 | if (streq(member, "IPIngressFilterPath")) | |
2244 | info->ip_filters_custom_ingress = !strv_isempty(l); | |
2245 | else if (streq(member, "IPEgressFilterPath")) | |
3da57008 | 2246 | info->ip_filters_custom_egress = !strv_isempty(l); |
fab34748 KL |
2247 | |
2248 | return 0; | |
2249 | } | |
2250 | ||
ec16f3b6 LP |
2251 | static int property_read_device_allow( |
2252 | sd_bus *bus, | |
2253 | const char *member, | |
2254 | sd_bus_message *m, | |
2255 | sd_bus_error *error, | |
2256 | void *userdata) { | |
2257 | ||
1624114d | 2258 | SecurityInfo *info = userdata; |
ec16f3b6 LP |
2259 | size_t n = 0; |
2260 | int r; | |
2261 | ||
2262 | assert(bus); | |
2263 | assert(member); | |
2264 | assert(m); | |
2265 | ||
2266 | r = sd_bus_message_enter_container(m, 'a', "(ss)"); | |
2267 | if (r < 0) | |
2268 | return r; | |
2269 | ||
2270 | for (;;) { | |
2271 | const char *name, *policy; | |
2272 | ||
2273 | r = sd_bus_message_read(m, "(ss)", &name, &policy); | |
2274 | if (r < 0) | |
2275 | return r; | |
2276 | if (r == 0) | |
2277 | break; | |
2278 | ||
2279 | n++; | |
2280 | } | |
2281 | ||
2282 | info->device_allow_non_empty = n > 0; | |
2283 | ||
2284 | return sd_bus_message_exit_container(m); | |
2285 | } | |
2286 | ||
1624114d | 2287 | static int acquire_security_info(sd_bus *bus, const char *name, SecurityInfo *info, AnalyzeSecurityFlags flags) { |
ec16f3b6 LP |
2288 | |
2289 | static const struct bus_properties_map security_map[] = { | |
1624114d MG |
2290 | { "AmbientCapabilities", "t", NULL, offsetof(SecurityInfo, ambient_capabilities) }, |
2291 | { "CapabilityBoundingSet", "t", NULL, offsetof(SecurityInfo, capability_bounding_set) }, | |
2292 | { "DefaultDependencies", "b", NULL, offsetof(SecurityInfo, default_dependencies) }, | |
2293 | { "Delegate", "b", NULL, offsetof(SecurityInfo, delegate) }, | |
2294 | { "DeviceAllow", "a(ss)", property_read_device_allow, 0 }, | |
2295 | { "DevicePolicy", "s", NULL, offsetof(SecurityInfo, device_policy) }, | |
2296 | { "DynamicUser", "b", NULL, offsetof(SecurityInfo, dynamic_user) }, | |
2297 | { "FragmentPath", "s", NULL, offsetof(SecurityInfo, fragment_path) }, | |
2298 | { "IPAddressAllow", "a(iayu)", property_read_ip_address_allow, 0 }, | |
2299 | { "IPAddressDeny", "a(iayu)", property_read_ip_address_allow, 0 }, | |
2300 | { "IPIngressFilterPath", "as", property_read_ip_filters, 0 }, | |
2301 | { "IPEgressFilterPath", "as", property_read_ip_filters, 0 }, | |
2302 | { "Id", "s", NULL, offsetof(SecurityInfo, id) }, | |
2303 | { "KeyringMode", "s", NULL, offsetof(SecurityInfo, keyring_mode) }, | |
2304 | { "ProtectProc", "s", NULL, offsetof(SecurityInfo, protect_proc) }, | |
2305 | { "ProcSubset", "s", NULL, offsetof(SecurityInfo, proc_subset) }, | |
2306 | { "LoadState", "s", NULL, offsetof(SecurityInfo, load_state) }, | |
2307 | { "LockPersonality", "b", NULL, offsetof(SecurityInfo, lock_personality) }, | |
2308 | { "MemoryDenyWriteExecute", "b", NULL, offsetof(SecurityInfo, memory_deny_write_execute) }, | |
2309 | { "NoNewPrivileges", "b", NULL, offsetof(SecurityInfo, no_new_privileges) }, | |
2310 | { "NotifyAccess", "s", NULL, offsetof(SecurityInfo, notify_access) }, | |
2311 | { "PrivateDevices", "b", NULL, offsetof(SecurityInfo, private_devices) }, | |
2312 | { "PrivateMounts", "b", NULL, offsetof(SecurityInfo, private_mounts) }, | |
2313 | { "PrivateNetwork", "b", NULL, offsetof(SecurityInfo, private_network) }, | |
2314 | { "PrivateTmp", "b", NULL, offsetof(SecurityInfo, private_tmp) }, | |
2315 | { "PrivateUsers", "b", NULL, offsetof(SecurityInfo, private_users) }, | |
2316 | { "ProtectControlGroups", "b", NULL, offsetof(SecurityInfo, protect_control_groups) }, | |
2317 | { "ProtectHome", "s", NULL, offsetof(SecurityInfo, protect_home) }, | |
2318 | { "ProtectHostname", "b", NULL, offsetof(SecurityInfo, protect_hostname) }, | |
2319 | { "ProtectKernelModules", "b", NULL, offsetof(SecurityInfo, protect_kernel_modules) }, | |
2320 | { "ProtectKernelTunables", "b", NULL, offsetof(SecurityInfo, protect_kernel_tunables) }, | |
2321 | { "ProtectKernelLogs", "b", NULL, offsetof(SecurityInfo, protect_kernel_logs) }, | |
2322 | { "ProtectClock", "b", NULL, offsetof(SecurityInfo, protect_clock) }, | |
2323 | { "ProtectSystem", "s", NULL, offsetof(SecurityInfo, protect_system) }, | |
2324 | { "RemoveIPC", "b", NULL, offsetof(SecurityInfo, remove_ipc) }, | |
2325 | { "RestrictAddressFamilies", "(bas)", property_read_restrict_address_families, 0 }, | |
2326 | { "RestrictNamespaces", "t", property_read_restrict_namespaces, 0 }, | |
2327 | { "RestrictRealtime", "b", NULL, offsetof(SecurityInfo, restrict_realtime) }, | |
2328 | { "RestrictSUIDSGID", "b", NULL, offsetof(SecurityInfo, restrict_suid_sgid) }, | |
2329 | { "RootDirectory", "s", NULL, offsetof(SecurityInfo, root_directory) }, | |
2330 | { "RootImage", "s", NULL, offsetof(SecurityInfo, root_image) }, | |
2331 | { "SupplementaryGroups", "as", NULL, offsetof(SecurityInfo, supplementary_groups) }, | |
2332 | { "SystemCallArchitectures", "as", property_read_syscall_archs, 0 }, | |
2333 | { "SystemCallFilter", "(as)", property_read_system_call_filter, 0 }, | |
2334 | { "Type", "s", NULL, offsetof(SecurityInfo, type) }, | |
2335 | { "UMask", "u", property_read_umask, 0 }, | |
2336 | { "User", "s", NULL, offsetof(SecurityInfo, user) }, | |
ec16f3b6 LP |
2337 | {} |
2338 | }; | |
2339 | ||
2340 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
2341 | _cleanup_free_ char *path = NULL; | |
2342 | int r; | |
2343 | ||
2344 | /* Note: this mangles *info on failure! */ | |
2345 | ||
2346 | assert(bus); | |
2347 | assert(name); | |
2348 | assert(info); | |
2349 | ||
2350 | path = unit_dbus_path_from_name(name); | |
2351 | if (!path) | |
2352 | return log_oom(); | |
2353 | ||
1ace223c SJ |
2354 | r = bus_map_all_properties( |
2355 | bus, | |
2356 | "org.freedesktop.systemd1", | |
2357 | path, | |
2358 | security_map, | |
2359 | BUS_MAP_STRDUP | BUS_MAP_BOOLEAN_AS_BOOL, | |
2360 | &error, | |
2361 | NULL, | |
2362 | info); | |
ec16f3b6 LP |
2363 | if (r < 0) |
2364 | return log_error_errno(r, "Failed to get unit properties: %s", bus_error_message(&error, r)); | |
2365 | ||
2366 | if (!streq_ptr(info->load_state, "loaded")) { | |
2367 | ||
2368 | if (FLAGS_SET(flags, ANALYZE_SECURITY_ONLY_LOADED)) | |
2369 | return -EMEDIUMTYPE; | |
2370 | ||
2371 | if (streq_ptr(info->load_state, "not-found")) | |
2372 | log_error("Unit %s not found, cannot analyze.", name); | |
2373 | else if (streq_ptr(info->load_state, "masked")) | |
2374 | log_error("Unit %s is masked, cannot analyze.", name); | |
2375 | else | |
2376 | log_error("Unit %s not loaded properly, cannot analyze.", name); | |
2377 | ||
2378 | return -EINVAL; | |
2379 | } | |
2380 | ||
2381 | if (FLAGS_SET(flags, ANALYZE_SECURITY_ONLY_LONG_RUNNING) && streq_ptr(info->type, "oneshot")) | |
2382 | return -EMEDIUMTYPE; | |
2383 | ||
2384 | if (info->private_devices || | |
2385 | info->private_tmp || | |
2386 | info->protect_control_groups || | |
2387 | info->protect_kernel_tunables || | |
2388 | info->protect_kernel_modules || | |
2389 | !streq_ptr(info->protect_home, "no") || | |
2390 | !streq_ptr(info->protect_system, "no") || | |
2391 | info->root_image) | |
2392 | info->private_mounts = true; | |
2393 | ||
2394 | if (info->protect_kernel_modules) | |
2395 | info->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYS_MODULE); | |
2396 | ||
82dce83b KK |
2397 | if (info->protect_kernel_logs) |
2398 | info->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYSLOG); | |
2399 | ||
9f37272a KK |
2400 | if (info->protect_clock) |
2401 | info->capability_bounding_set &= ~((UINT64_C(1) << CAP_SYS_TIME) | | |
2402 | (UINT64_C(1) << CAP_WAKE_ALARM)); | |
2403 | ||
ec16f3b6 LP |
2404 | if (info->private_devices) |
2405 | info->capability_bounding_set &= ~((UINT64_C(1) << CAP_MKNOD) | | |
2406 | (UINT64_C(1) << CAP_SYS_RAWIO)); | |
2407 | ||
2408 | return 0; | |
2409 | } | |
2410 | ||
3838d22c MG |
2411 | static int analyze_security_one(sd_bus *bus, |
2412 | const char *name, | |
2413 | Table *overview_table, | |
2414 | AnalyzeSecurityFlags flags, | |
2415 | unsigned threshold, | |
4b4a8ef7 MG |
2416 | JsonVariant *policy, |
2417 | PagerFlags pager_flags, | |
2418 | JsonFormatFlags json_format_flags) { | |
dfbda879 | 2419 | |
1624114d MG |
2420 | _cleanup_(security_info_freep) SecurityInfo *info = security_info_new(); |
2421 | if (!info) | |
2422 | return log_oom(); | |
2423 | ||
ec16f3b6 LP |
2424 | int r; |
2425 | ||
2426 | assert(bus); | |
2427 | assert(name); | |
2428 | ||
1624114d | 2429 | r = acquire_security_info(bus, name, info, flags); |
ec16f3b6 LP |
2430 | if (r == -EMEDIUMTYPE) /* Ignore this one because not loaded or Type is oneshot */ |
2431 | return 0; | |
2432 | if (r < 0) | |
2433 | return r; | |
2434 | ||
4b4a8ef7 | 2435 | r = assess(info, overview_table, flags, threshold, policy, pager_flags, json_format_flags); |
ec16f3b6 LP |
2436 | if (r < 0) |
2437 | return r; | |
2438 | ||
2439 | return 0; | |
2440 | } | |
2441 | ||
1624114d MG |
2442 | /* Refactoring SecurityInfo so that it can make use of existing struct variables instead of reading from dbus */ |
2443 | static int get_security_info(Unit *u, ExecContext *c, CGroupContext *g, SecurityInfo **ret_info) { | |
2444 | assert(ret_info); | |
2445 | ||
2446 | _cleanup_(security_info_freep) SecurityInfo *info = security_info_new(); | |
2447 | if (!info) | |
2448 | return log_oom(); | |
2449 | ||
2450 | if (u) { | |
2451 | if (u->id) { | |
2452 | info->id = strdup(u->id); | |
2453 | if (!info->id) | |
2454 | return log_oom(); | |
2455 | } | |
2456 | if (unit_type_to_string(u->type)) { | |
2457 | info->type = strdup(unit_type_to_string(u->type)); | |
2458 | if (!info->type) | |
2459 | return log_oom(); | |
2460 | } | |
2461 | if (unit_load_state_to_string(u->load_state)) { | |
2462 | info->load_state = strdup(unit_load_state_to_string(u->load_state)); | |
2463 | if (!info->load_state) | |
2464 | return log_oom(); | |
2465 | } | |
2466 | if (u->fragment_path) { | |
2467 | info->fragment_path = strdup(u->fragment_path); | |
2468 | if (!info->fragment_path) | |
2469 | return log_oom(); | |
2470 | } | |
2471 | info->default_dependencies = u->default_dependencies; | |
2472 | if (u->type == UNIT_SERVICE && notify_access_to_string(SERVICE(u)->notify_access)) { | |
2473 | info->notify_access = strdup(notify_access_to_string(SERVICE(u)->notify_access)); | |
2474 | if (!info->notify_access) | |
2475 | return log_oom(); | |
2476 | } | |
2477 | } | |
2478 | ||
2479 | if (c) { | |
2480 | info->ambient_capabilities = c->capability_ambient_set; | |
2481 | info->capability_bounding_set = c->capability_bounding_set; | |
2482 | if (c->user) { | |
2483 | info->user = strdup(c->user); | |
2484 | if (!info->user) | |
2485 | return log_oom(); | |
2486 | } | |
2487 | if (c->supplementary_groups) { | |
2488 | info->supplementary_groups = strv_copy(c->supplementary_groups); | |
2489 | if (!info->supplementary_groups) | |
2490 | return log_oom(); | |
2491 | } | |
2492 | info->dynamic_user = c->dynamic_user; | |
2493 | if (exec_keyring_mode_to_string(c->keyring_mode)) { | |
2494 | info->keyring_mode = strdup(exec_keyring_mode_to_string(c->keyring_mode)); | |
2495 | if (!info->keyring_mode) | |
2496 | return log_oom(); | |
2497 | } | |
2498 | if (protect_proc_to_string(c->protect_proc)) { | |
2499 | info->protect_proc = strdup(protect_proc_to_string(c->protect_proc)); | |
2500 | if (!info->protect_proc) | |
2501 | return log_oom(); | |
2502 | } | |
2503 | if (proc_subset_to_string(c->proc_subset)) { | |
2504 | info->proc_subset = strdup(proc_subset_to_string(c->proc_subset)); | |
2505 | if (!info->proc_subset) | |
2506 | return log_oom(); | |
2507 | } | |
2508 | info->lock_personality = c->lock_personality; | |
2509 | info->memory_deny_write_execute = c->memory_deny_write_execute; | |
2510 | info->no_new_privileges = c->no_new_privileges; | |
2511 | info->protect_hostname = c->protect_hostname; | |
2512 | info->private_devices = c->private_devices; | |
2513 | info->private_mounts = c->private_mounts; | |
2514 | info->private_network = c->private_network; | |
2515 | info->private_tmp = c->private_tmp; | |
2516 | info->private_users = c->private_users; | |
2517 | info->protect_control_groups = c->protect_control_groups; | |
2518 | info->protect_kernel_modules = c->protect_kernel_modules; | |
2519 | info->protect_kernel_tunables = c->protect_kernel_tunables; | |
2520 | info->protect_kernel_logs = c->protect_kernel_logs; | |
2521 | info->protect_clock = c->protect_clock; | |
2522 | if (protect_home_to_string(c->protect_home)) { | |
2523 | info->protect_home = strdup(protect_home_to_string(c->protect_home)); | |
2524 | if (!info->protect_home) | |
2525 | return log_oom(); | |
2526 | } | |
2527 | if (protect_system_to_string(c->protect_system)) { | |
2528 | info->protect_system = strdup(protect_system_to_string(c->protect_system)); | |
2529 | if (!info->protect_system) | |
2530 | return log_oom(); | |
2531 | } | |
2532 | info->remove_ipc = c->remove_ipc; | |
2533 | info->restrict_address_family_inet = | |
2534 | info->restrict_address_family_unix = | |
2535 | info->restrict_address_family_netlink = | |
2536 | info->restrict_address_family_packet = | |
2537 | info->restrict_address_family_other = | |
2538 | c->address_families_allow_list; | |
2539 | ||
2540 | void *key; | |
2541 | SET_FOREACH(key, c->address_families) { | |
2542 | int family = PTR_TO_INT(key); | |
2543 | if (family == 0) | |
2544 | continue; | |
2545 | if (IN_SET(family, AF_INET, AF_INET6)) | |
2546 | info->restrict_address_family_inet = !c->address_families_allow_list; | |
2547 | else if (family == AF_UNIX) | |
2548 | info->restrict_address_family_unix = !c->address_families_allow_list; | |
2549 | else if (family == AF_NETLINK) | |
2550 | info->restrict_address_family_netlink = !c->address_families_allow_list; | |
2551 | else if (family == AF_PACKET) | |
2552 | info->restrict_address_family_packet = !c->address_families_allow_list; | |
2553 | else | |
2554 | info->restrict_address_family_other = !c->address_families_allow_list; | |
2555 | } | |
2556 | ||
2557 | info->restrict_namespaces = c->restrict_namespaces; | |
2558 | info->restrict_realtime = c->restrict_realtime; | |
2559 | info->restrict_suid_sgid = c->restrict_suid_sgid; | |
2560 | if (c->root_directory) { | |
2561 | info->root_directory = strdup(c->root_directory); | |
2562 | if (!info->root_directory) | |
2563 | return log_oom(); | |
2564 | } | |
2565 | if (c->root_image) { | |
2566 | info->root_image = strdup(c->root_image); | |
2567 | if (!info->root_image) | |
2568 | return log_oom(); | |
2569 | } | |
2570 | info->_umask = c->umask; | |
2571 | if (c->syscall_archs) { | |
2572 | info->system_call_architectures = set_copy(c->syscall_archs); | |
2573 | if (!info->system_call_architectures) | |
2574 | return log_oom(); | |
2575 | } | |
2576 | info->system_call_filter_allow_list = c->syscall_allow_list; | |
2577 | if (c->syscall_filter) { | |
2578 | info->system_call_filter = hashmap_copy(c->syscall_filter); | |
2579 | if (!info->system_call_filter) | |
2580 | return log_oom(); | |
2581 | } | |
2582 | } | |
2583 | ||
2584 | if (g) { | |
2585 | info->delegate = g->delegate; | |
2586 | if (cgroup_device_policy_to_string(g->device_policy)) { | |
2587 | info->device_policy = strdup(cgroup_device_policy_to_string(g->device_policy)); | |
2588 | if (!info->device_policy) | |
2589 | return log_oom(); | |
2590 | } | |
2591 | ||
84ebe6f0 | 2592 | struct in_addr_prefix *i; |
1624114d MG |
2593 | bool deny_ipv4 = false, deny_ipv6 = false; |
2594 | ||
84ebe6f0 | 2595 | SET_FOREACH(i, g->ip_address_deny) { |
1624114d MG |
2596 | if (i->family == AF_INET && i->prefixlen == 0) |
2597 | deny_ipv4 = true; | |
2598 | else if (i->family == AF_INET6 && i->prefixlen == 0) | |
2599 | deny_ipv6 = true; | |
2600 | } | |
2601 | info->ip_address_deny_all = deny_ipv4 && deny_ipv6; | |
2602 | ||
2603 | info->ip_address_allow_localhost = info->ip_address_allow_other = false; | |
84ebe6f0 | 2604 | SET_FOREACH(i, g->ip_address_allow) { |
1624114d MG |
2605 | if (in_addr_is_localhost(i->family, &i->address)) |
2606 | info->ip_address_allow_localhost = true; | |
2607 | else | |
2608 | info->ip_address_allow_other = true; | |
2609 | } | |
2610 | ||
2611 | info->ip_filters_custom_ingress = !strv_isempty(g->ip_filters_ingress); | |
2612 | info->ip_filters_custom_egress = !strv_isempty(g->ip_filters_egress); | |
2613 | info->device_allow_non_empty = !LIST_IS_EMPTY(g->device_allow); | |
2614 | } | |
2615 | ||
2616 | *ret_info = TAKE_PTR(info); | |
2617 | ||
2618 | return 0; | |
2619 | } | |
2620 | ||
4b4a8ef7 MG |
2621 | static int offline_security_check(Unit *u, |
2622 | unsigned threshold, | |
2623 | JsonVariant *policy, | |
2624 | PagerFlags pager_flags, | |
2625 | JsonFormatFlags json_format_flags) { | |
2626 | ||
bb43d853 MG |
2627 | _cleanup_(table_unrefp) Table *overview_table = NULL; |
2628 | AnalyzeSecurityFlags flags = 0; | |
2629 | _cleanup_(security_info_freep) SecurityInfo *info = NULL; | |
2630 | int r; | |
2631 | ||
2632 | assert(u); | |
2633 | ||
2634 | if (DEBUG_LOGGING) | |
2635 | unit_dump(u, stdout, "\t"); | |
2636 | ||
2637 | r = get_security_info(u, unit_get_exec_context(u), unit_get_cgroup_context(u), &info); | |
2638 | if (r < 0) | |
2639 | return r; | |
2640 | ||
4b4a8ef7 | 2641 | return assess(info, overview_table, flags, threshold, policy, pager_flags, json_format_flags); |
bb43d853 MG |
2642 | } |
2643 | ||
3838d22c MG |
2644 | static int offline_security_checks(char **filenames, |
2645 | JsonVariant *policy, | |
2646 | UnitFileScope scope, | |
2647 | bool check_man, | |
2648 | bool run_generators, | |
2649 | unsigned threshold, | |
4b4a8ef7 | 2650 | const char *root, |
04469211 | 2651 | const char *profile, |
4b4a8ef7 MG |
2652 | PagerFlags pager_flags, |
2653 | JsonFormatFlags json_format_flags) { | |
3838d22c | 2654 | |
bb43d853 MG |
2655 | const ManagerTestRunFlags flags = |
2656 | MANAGER_TEST_RUN_MINIMAL | | |
2657 | MANAGER_TEST_RUN_ENV_GENERATORS | | |
3f1487f5 | 2658 | MANAGER_TEST_RUN_IGNORE_DEPENDENCIES | |
bb43d853 MG |
2659 | run_generators * MANAGER_TEST_RUN_GENERATORS; |
2660 | ||
2661 | _cleanup_(manager_freep) Manager *m = NULL; | |
2662 | Unit *units[strv_length(filenames)]; | |
2663 | _cleanup_free_ char *var = NULL; | |
2664 | int r, k; | |
2665 | size_t count = 0; | |
2666 | char **filename; | |
2667 | ||
2668 | if (strv_isempty(filenames)) | |
2669 | return 0; | |
2670 | ||
2671 | /* set the path */ | |
2672 | r = verify_generate_path(&var, filenames); | |
2673 | if (r < 0) | |
2674 | return log_error_errno(r, "Failed to generate unit load path: %m"); | |
2675 | ||
2676 | assert_se(set_unit_path(var) >= 0); | |
2677 | ||
2678 | r = manager_new(scope, flags, &m); | |
2679 | if (r < 0) | |
2680 | return log_error_errno(r, "Failed to initialize manager: %m"); | |
2681 | ||
2682 | log_debug("Starting manager..."); | |
2683 | ||
2684 | r = manager_startup(m, /* serialization= */ NULL, /* fds= */ NULL, root); | |
2685 | if (r < 0) | |
2686 | return r; | |
2687 | ||
04469211 LB |
2688 | if (profile) { |
2689 | /* Ensure the temporary directory is in the search path, so that we can add drop-ins. */ | |
2690 | r = strv_extend(&m->lookup_paths.search_path, m->lookup_paths.temporary_dir); | |
2691 | if (r < 0) | |
2692 | return log_oom(); | |
2693 | } | |
2694 | ||
bb43d853 MG |
2695 | log_debug("Loading remaining units from the command line..."); |
2696 | ||
2697 | STRV_FOREACH(filename, filenames) { | |
2698 | _cleanup_free_ char *prepared = NULL; | |
2699 | ||
2700 | log_debug("Handling %s...", *filename); | |
2701 | ||
2702 | k = verify_prepare_filename(*filename, &prepared); | |
2703 | if (k < 0) { | |
2704 | log_warning_errno(k, "Failed to prepare filename %s: %m", *filename); | |
2705 | if (r == 0) | |
2706 | r = k; | |
2707 | continue; | |
2708 | } | |
2709 | ||
04469211 LB |
2710 | /* When a portable image is analyzed, the profile is what provides a good chunk of |
2711 | * the security-related settings, but they are obviously not shipped with the image. | |
2712 | * This allows to take them in consideration. */ | |
2713 | if (profile) { | |
2714 | _cleanup_free_ char *unit_name = NULL, *dropin = NULL, *profile_path = NULL; | |
2715 | ||
2716 | r = path_extract_filename(prepared, &unit_name); | |
2717 | if (r < 0) | |
2718 | return log_oom(); | |
2719 | ||
2720 | dropin = strjoin(m->lookup_paths.temporary_dir, "/", unit_name, ".d/profile.conf"); | |
2721 | if (!dropin) | |
2722 | return log_oom(); | |
2723 | (void) mkdir_parents(dropin, 0755); | |
2724 | ||
2725 | if (!is_path(profile)) { | |
2726 | r = find_portable_profile(profile, unit_name, &profile_path); | |
2727 | if (r < 0) | |
2728 | return log_error_errno(r, "Failed to find portable profile %s: %m", profile); | |
2729 | profile = profile_path; | |
2730 | } | |
2731 | ||
2732 | r = copy_file(profile, dropin, 0, 0644, 0, 0, 0); | |
2733 | if (r < 0) | |
2734 | return log_error_errno(r, "Failed to copy: %m"); | |
2735 | } | |
2736 | ||
bb43d853 MG |
2737 | k = manager_load_startable_unit_or_warn(m, NULL, prepared, &units[count]); |
2738 | if (k < 0) { | |
2739 | if (r == 0) | |
2740 | r = k; | |
2741 | continue; | |
2742 | } | |
2743 | ||
2744 | count++; | |
2745 | } | |
2746 | ||
2747 | for (size_t i = 0; i < count; i++) { | |
4b4a8ef7 | 2748 | k = offline_security_check(units[i], threshold, policy, pager_flags, json_format_flags); |
bb43d853 MG |
2749 | if (k < 0 && r == 0) |
2750 | r = k; | |
2751 | } | |
2752 | ||
2753 | return r; | |
2754 | } | |
2755 | ||
ecfd082b MG |
2756 | int analyze_security(sd_bus *bus, |
2757 | char **units, | |
2758 | JsonVariant *policy, | |
2759 | UnitFileScope scope, | |
2760 | bool check_man, | |
2761 | bool run_generators, | |
2762 | bool offline, | |
2763 | unsigned threshold, | |
2764 | const char *root, | |
04469211 | 2765 | const char *profile, |
4b4a8ef7 MG |
2766 | JsonFormatFlags json_format_flags, |
2767 | PagerFlags pager_flags, | |
ecfd082b | 2768 | AnalyzeSecurityFlags flags) { |
dfbda879 | 2769 | |
ec16f3b6 LP |
2770 | _cleanup_(table_unrefp) Table *overview_table = NULL; |
2771 | int ret = 0, r; | |
2772 | ||
741c4c8d | 2773 | assert(!!bus != offline); |
ec16f3b6 | 2774 | |
bb43d853 | 2775 | if (offline) |
04469211 | 2776 | return offline_security_checks(units, policy, scope, check_man, run_generators, threshold, root, profile, pager_flags, json_format_flags); |
bb43d853 | 2777 | |
ec16f3b6 | 2778 | if (strv_length(units) != 1) { |
9969b542 | 2779 | overview_table = table_new("unit", "exposure", "predicate", "happy"); |
ec16f3b6 LP |
2780 | if (!overview_table) |
2781 | return log_oom(); | |
2782 | } | |
2783 | ||
2784 | if (strv_isempty(units)) { | |
2785 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
2786 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
2787 | _cleanup_strv_free_ char **list = NULL; | |
319a4f4b | 2788 | size_t n = 0; |
ec16f3b6 LP |
2789 | char **i; |
2790 | ||
2791 | r = sd_bus_call_method( | |
2792 | bus, | |
2793 | "org.freedesktop.systemd1", | |
2794 | "/org/freedesktop/systemd1", | |
2795 | "org.freedesktop.systemd1.Manager", | |
2796 | "ListUnits", | |
1ace223c SJ |
2797 | &error, |
2798 | &reply, | |
ec16f3b6 LP |
2799 | NULL); |
2800 | if (r < 0) | |
2801 | return log_error_errno(r, "Failed to list units: %s", bus_error_message(&error, r)); | |
2802 | ||
2803 | r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)"); | |
2804 | if (r < 0) | |
2805 | return bus_log_parse_error(r); | |
2806 | ||
2807 | for (;;) { | |
2808 | UnitInfo info; | |
2809 | char *copy = NULL; | |
2810 | ||
2811 | r = bus_parse_unit_info(reply, &info); | |
2812 | if (r < 0) | |
2813 | return bus_log_parse_error(r); | |
2814 | if (r == 0) | |
2815 | break; | |
2816 | ||
2817 | if (!endswith(info.id, ".service")) | |
2818 | continue; | |
2819 | ||
319a4f4b | 2820 | if (!GREEDY_REALLOC(list, n + 2)) |
ec16f3b6 LP |
2821 | return log_oom(); |
2822 | ||
2823 | copy = strdup(info.id); | |
2824 | if (!copy) | |
2825 | return log_oom(); | |
2826 | ||
2827 | list[n++] = copy; | |
2828 | list[n] = NULL; | |
2829 | } | |
2830 | ||
2831 | strv_sort(list); | |
2832 | ||
2833 | flags |= ANALYZE_SECURITY_SHORT|ANALYZE_SECURITY_ONLY_LOADED|ANALYZE_SECURITY_ONLY_LONG_RUNNING; | |
2834 | ||
2835 | STRV_FOREACH(i, list) { | |
4b4a8ef7 | 2836 | r = analyze_security_one(bus, *i, overview_table, flags, threshold, policy, pager_flags, json_format_flags); |
ec16f3b6 LP |
2837 | if (r < 0 && ret >= 0) |
2838 | ret = r; | |
2839 | } | |
2840 | ||
2841 | } else { | |
2842 | char **i; | |
2843 | ||
2844 | STRV_FOREACH(i, units) { | |
2845 | _cleanup_free_ char *mangled = NULL, *instance = NULL; | |
2846 | const char *name; | |
2847 | ||
2848 | if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT) && i != units) { | |
2849 | putc('\n', stdout); | |
2850 | fflush(stdout); | |
2851 | } | |
2852 | ||
df7c4eb6 | 2853 | r = unit_name_mangle(*i, 0, &mangled); |
ec16f3b6 LP |
2854 | if (r < 0) |
2855 | return log_error_errno(r, "Failed to mangle unit name '%s': %m", *i); | |
2856 | ||
d7a0f1f4 FS |
2857 | if (!endswith(mangled, ".service")) |
2858 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2859 | "Unit %s is not a service unit, refusing.", | |
2860 | *i); | |
ec16f3b6 LP |
2861 | |
2862 | if (unit_name_is_valid(mangled, UNIT_NAME_TEMPLATE)) { | |
2863 | r = unit_name_replace_instance(mangled, "test-instance", &instance); | |
2864 | if (r < 0) | |
2865 | return log_oom(); | |
2866 | ||
2867 | name = instance; | |
2868 | } else | |
2869 | name = mangled; | |
2870 | ||
4b4a8ef7 | 2871 | r = analyze_security_one(bus, name, overview_table, flags, threshold, policy, pager_flags, json_format_flags); |
ec16f3b6 LP |
2872 | if (r < 0 && ret >= 0) |
2873 | ret = r; | |
2874 | } | |
2875 | } | |
2876 | ||
2877 | if (overview_table) { | |
2878 | if (!FLAGS_SET(flags, ANALYZE_SECURITY_SHORT)) { | |
2879 | putc('\n', stdout); | |
2880 | fflush(stdout); | |
2881 | } | |
2882 | ||
4b4a8ef7 | 2883 | r = table_print_with_pager(overview_table, json_format_flags, pager_flags, /* show_header= */true); |
ec16f3b6 LP |
2884 | if (r < 0) |
2885 | return log_error_errno(r, "Failed to output table: %m"); | |
2886 | } | |
ec16f3b6 LP |
2887 | return ret; |
2888 | } |